Seresto Flea Collar for Dogs Review

A Flea Collar That Fights Both Fleas and Ticks?

seresto-flea-collar

There are several different methods for getting fleas and ticks to leave your dog alone, but which one is the best?

We’re going to take a look at the ingredients, warnings, and share information from other users, so you will know exactly how well the product worked for other and what you can expect when you make your purchase.

Company Claims

Seresto Flea Collar for Dogs will do two different things. It will repel fleas and ticks and will kill any currently living on your dog. It does take up to 48 hours for the toxin to spread over your pet, so any ticks should be removed by hand.

The flea collar will last for up to 8 months and will repel both fleas and ticks for the entire time. It is water resistant and will continue to release medication even if it gets wet or dirty. It is odor-free and will not cause harm to your pet, even if they manage to chew on the collar.

Active Ingredients

Seresto Flea Collar for Dogs has two active ingredients:

  • Imidacloprid
  • Flumethrin

How this ingredient works

Imidacloprid acts as a neurotoxin in insects, causing them to lose control of their central nervous system. This leads to paralysis and eventual death. It is also slightly toxic to mammals and should only be used on the outside of your dog. It is one of the most widely used insecticides in the world but it is considered moderately toxic when ingested orally.

Flumethrin is similar to Imidacloprid except that it was developed to work on tick instead of fleas. It is nontoxic to mammals and did not show any adverse effects in any of its laboratory studies. It is used in this situation because it also neutralizes the adverse effects from ingesting the previous medication.

Usage Information

The Seresto Flea Collar for Dogs is easy to use. All you do is remove the collar from the bag and place it around the dog’s neck. Adjust the tightness of the collar until two fingers can be inserted under the band.

Snip off any excess collar that may stick out beyond the end of the clip. This prevents other animals from grabbing onto the collar and removing it from your dog.

The collar comes with a breakaway clip that will release if it is every caught on another obstacle. This prevents your dog from chocking on the collar and allows them to escape without harm.

What Are Users Saying

The reviews for this product are pretty terrible. Many people reported finding ticks even after the initial 48 hour waiting period. There were even reports of animals getting flea infestations after only one or two months of wearing the collar.

All of the reviews were negative regarding the effectiveness with ticks. Some animals even developed chemical burns on their necks after wearing the collar for a few days.

Side Effects and Precautions

Some of the side effects of the Seresto Flea Collar for Dogs include itchy skin, redness, swelling and intense scratching around the collar. Some dogs even had problems with red eyes after the first few days, which disappeared when the collar was removed.

Conclusion

There is no way we could recommend the Seresto Flea Collar for Dogs because, according to the people who have used the collar, it doesn’t work. Normally, a few negative reviews are expected for any product, but having only negative reviews shows that a product is probably not the best investment.

If you need to keep fleas and ticks away from your dogs, there are safer and more effective products available.

If you’ve used this product, please tell us about your experience in the comments section below.



86 Responses to “Seresto Flea Collar for Dogs Review”
  1. Scott says:

    I have been using the Seresto collar on my 12 year old and 3 1/2 year old dogs (Labradors)since June 6th 2013. In that time each dog has developed diarrhea and my older dog has been near death in the emergency vet clinic all weekend at great expense mind you with severe vomiting and diarrhea.

    I’m not saying it is the Seresto collar but neither dog is known to eat foreign objects or dead animals as they are in a fenced enclosure. For precaution I am taking them off it. The similarity and timing of their symptoms is no coincidence I believe.

    Reply
    • Melissa says:

      No Coincidence Scott,

      The same is happening to my two year old Golden Retriever. I put the collar on her two weeks ago and she started having the same symptoms. I took it off, bathe her and gave her bland diet and she returned to normal. I called bayer when this happened and they said that this couldn’t happen. There could have been other variables- berries growing in back yard that could have caused it. I waited until a few days ago and put it back on. the same symptoms started to happen again. Called Bayer back and got a refund.

      Reply
    • Bonnie says:

      No Coincidence! My Weimaraner started loosing spots of hair and had severe diarrhea. Toy poodle became very lethargic. Thank God we noticed before it was too late.

      Reply
    • robin says:

      my almost 12 year old dog has never had fleas until i used the seresto collar what a giant waste of money now im battling fleas and she is suffered for 2 weeks back to advantix

      Reply
    • theress says:

      Do u have to have proof of purchase?

      Reply
  2. Cindy W says:

    I started using this flea collar about a month ago and my 5lb Chihuahua is now a very sick dog. 3 weeks ago he had 4 very strange seizures. Strange as he’d come out of them immediately, no sluggishness, nothing. This morning he lost his bladder, his legs don’t want to hold him up and he’s not eating. He’s taking water from me through a syringe, quite a lot thank goodness. One of those chemicals used is the same used in nicotine and can cause seizures in dogs. I had him a the Vet 3 weeks ago and his physical was normal, his blood work better than normal. It stumped the doctor. Needless to say he no longer has the collar on, I’ve washed his neck with Dawn, (he got pretty annoyed with me….that’s a good thing!), and he’s resting. I’m retired, fixed income etc, so no Vet again until Monday when I get paid. The last visit was about $500 and out of money. And scared.

    Reply
    • Anonymous says:

      Look for a not for profit Spayed and Neuter clinic. They will treat your animals for so much less than a Vets Office. The clinic has volunteer vets that volunteer their time and you don’t have to pay the high prices for the same services.

      Reply
    • Kris says:

      You should contact the manufacturer, look for phone number on back of box or on this site. If your vet agrees that these symptoms were caused by this product, you should get reimbursed for your vet bills. It was not with this company but with another that my dog had gotten very sick from their flea medication. It took a few months, but i was reimbursed for my $400 vet bill and the supply of medication i had bought.

      Reply
    • Loretta C says:

      Oh my gosh, Cindy. I just saw your comments and now cannot help but wonder if the Seresto collar is what caused my little silky terrier to start having seizures. The last one she had she could not even walk or stand up at all for over 12 hours. The vet assured me the collar had nothing to do with it, but I am removing it now. Thank you for sharing your experience and I pray your little fella is better now.

      Reply
      • BRIDGETTE says:

        MY chow chow bailey was not eating for 2 weeks throwing up red eyes ;weird noises at nite that woke me up could have been seizure;hair loss patches under collar blood and irritated skin;called bayers 800 number they made file and case number refund immediately from my vet glad people blog about this their reviews saved my baby!!!!bayer should remove seresto collars they are deadly!!!!!!!!!!!!!!!!!!!!

        Reply
      • Laurie says:

        my 7 yr old American Eskimo has had two seizure, the first one only lasted a few min and wasn’t bad, the second lasted for almost 4 min. His hind legs would not support him, when I looked him in the eyes he looked so scared and when he started to come out of it he was panting like he ran a marathon. I wish I never heard of Seresto.

        Reply
    • anthony marshall says:

      ring up bayer and demand your money back,same thing happening now to our four dogs,one seriously ill,

      Reply
  3. Mark says:

    My 4 to 5 yr. old Pekingese had a petit mal seizure after wearing the Seresto 8 month flea/tick collar for a little over a week. Also had episodes of vomiting. My approximately 10 yr. old Pekingese also had episodes of vomiting. Have removed the flea collars! Do NOT recommend.

    Reply
  4. Betty says:

    Put seresto collar on my 4 year old Australian cattle dog mix. With in a couple of weeks she was vehemently shaking her head. Took collar off gave bath shaking went away in a few days. Waited 1 month put collar back on same problem. She was shaking her head uncontrollably. Will not use again.

    Reply
  5. Sharon S says:

    I too started using the Seresto collar on my 6 yr old sheltie, vet recommended! :(. … I removed the collar today, after only a month of use. He had become increasingly lethargic with bouts of diarrhea with weakness: I had to carry him home from a short walk today. We went through so much this past month trying to figure out what was wrong: two expensive Vet visits, food change, antiobiotics, unnecessary worming for a rare intestinal bug and now the vet wants to do a colonostomy? I actually thought my sheltie was dying …we never looked at the collar as the cause.
    So, my grandson is hugging my sheltie, in an attempt to comfort him, and the side of his face swells! Time for the collar to go!!! I just wrote a letter to Bayer: asking for a refund, explaination and apology.

    Reply
  6. Barbara Smith says:

    My friend put this collar on her rat terrier and that very night he lost control of his bladder. The next day his breathing was labored and he couldn’t stop panting. A burn developed on his neck. He was taken to the vet and the collar was removed. Almost immediately his breathing improved and he stopped panting. A few chemical burns appeared on his body which are being treated with medication. The collar was returned and a refund given. A warning label should come with this collar and vets should be responsible too.

    Reply
    • Susan says:

      Barbara, what medication did you use for your dog’s burns? One of my mini poodles developed a bloody rash/burn on her throat (second time this has happened after using a Seresto collar) so I removed the collar. Yet yesterday she was acting very strangely, wanting to be held, and darting around in a weird, frantic manner. Not like herself at all. I saw that some people used Dawn dish detergent to clean their dogs around the neck. I wonder what I should do about my dog’s burns at her throat. Help!

      Reply
  7. Me says:

    We have these on our dogs now, my poodle was infested and the collar worked and still works great. No problems what so ever even on my cat and Italian Greyhound

    Reply
  8. sinne says:

    I love this product. I work at a vets office and use it on all my dogs and 1 cat. When I started using it I had a flea infestation. 1 year later I have had no problem with fleas or ticks. I have also recommended it to several clients who have dogs with FAD and it totally helped because it definitely seemed to repel the fleas BEFORE biting. Its great.

    Reply
  9. Staci says:

    I have tried almost everything to get rid of fleas on my 3 dogs from Dawn to the flea pills. My poor senior pug was miserable and losing her fur and my two American Bullies would hide on bath day. A month ago I bought this flea collar for all three of them and I have had nothing but fantastic results.My pugs fur is growing back and the fleas are gone. I will definitely keep an eye on my dogs after reading this but for now I am going to keep using it

    Reply
  10. Nancy says:

    We are on our second collar for our six dogs, 5 cairn terriers one chi mix. Have not had any problems with fleas tick or sickness. When we bathe we take collars of until dogs are complete dry. We live in South west Georgia capital of heat, fleas and ticks. With any new product there negative results. So far we are a positive results. I feel for all those of you that have had to endure all of these side effects, I know how much our pets mean to all of us. We LOVE ours so much.

    Reply
  11. Sue L. says:

    We put the Seresto flea & tick collar on our 20lb, 10-12 yr old dachshund at 7pm & by 3am she had a hacking cough. I removed the collar immediately. As the day went on she still coughed, but it had subsided a bit. Also bathed her a especially washed the area on her neck where the collar had been. Took her to the vet and spent good money as always and did get our money back for the collar. They will tell you when you call the people who make this collar that they had never heard of that side effect or any off them. My husband said “really, they’re a whole bunch of reviews on the internet” and the person he talked to said “I wonder if those are for real reviews”. No idiot, a bunch of people just went on line to bash this flea and tick collar. Geez, what moron’s!!!!

    Reply
  12. Alana M says:

    Got collar from Vet. Within 24 hours of applying, Max (80 lb Pitbull) wouldn’t eat, was lethargic, and his skin looked like an allergic reaction. He was constantly scratching he’s neck. Developed bleeding wound on neck from scratching so much. Removed collar on day 4 which is today. Benadryl seemed to help him rest earlier. He was given a long Dawn scrub shower to help remove chemicals. At first, I was thinking scabies, but now I think it’s the collar. Wish I could post pics on here. He’s appetite has already improved today. Hoping he’s skin gets better soon.

    Reply
    • Alana M says:

      Called Bayer and explained situation. Bayer said to take collar and reference # to vet and vet will start process with them for a refund. Taking Max to vet in the morning for treatment to make sure he isn’t getting septic. Max has lost more hair on back of neck and wound is now weeping fluid. Rash is getting better and he’s eating good. Still giving Benadryl twice a day along with some old doxycycline.

      Reply
      • rose & jake says:

        My pug wore this collar for about a week. Got lots of scabs and awful itching.Give 25mg benedryl but did not cure, also skin is turning black. Going to vet Mon this has been to weeks. I will contact Bayer, maybe they will help.

        Reply
    • Katharine says:

      Both my Husky mix have large areas of hair loss and itching since wearing the collar. Called Vet who didn’t think it could be the collar. One dog has been on Prednisone and antibiotic , to no avail. I am finally taking the collar off them and bathing in Dawn detergent . I am pretty upset by Thais given the cost.

      Reply
  13. Sydlit says:

    I left my Chi/Mix and my cat for 5 days while I was in hospital, with a friend stopping by to take care of my fur kids a couple times a day. . When I got home both pets and my house was saturated with fleas, to the point that they were on my bed and on me. After trying everything, including tried and true remedies, nature made sprays and topical treatments were ineffective. I bought both cat and dog Seresto collars…in one week not much change. In checking, the collar was too loose, I tightened it and not only did all the fleas on the animals die, but also in the house! They had no reaction or discomfort with this collar. However, I adopted a senior dog this May and ordered him a Seresto collar. I applied it loose and over a period of two weeks I slowly tightened it. Now when it was as tight as recommended, he scratched and scratched at the collar, skin under it was OK – I finally removed it and he hasn’t scratched since. The other two are still wearing their collars.

    Reply
  14. Sydlit says:

    This is an addendum to my previous statement…I removed all the Seresto collars, including the ones applied 5 months ago. My Chi/Mix has had stomach upset and cat seems ok, but after reading these reviews, I’m not taking any changes with my fur kids.

    Reply
  15. Donna C says:

    Our dog is now wearing her 2nd collar. She stays in the house at night when we’re home but during the day she roams through the weeds and woods. Until she started wearing this collar it was nothing to get 5-10 ticks a day off her. She hasn’t had any bad effects and she doesn’t have fleas or ticks. We highly recommend the Seresto collar.

    Reply
  16. Bobbie Dickie says:

    I have used a Seresto Collar on my two dogs (one border collie and one collie cross) for the past 6 months as we live in a tick prone area. Neither dog has had any side effects and also neither dog has had a tick since wearing the collar. This has been an excellent purchase because my dogs were frequently getting ticks attached. I used to use Front Line but the Seresto collar is more effective – no irritation and no messy application.

    Reply
  17. John Bomba says:

    Since putting collar on my toy poodle she has been scratching and scratching. Her ears are also red. I spoke with my vet, she was not sure. I have taken the collar off and her scratching has stopped. I will be sending a note to Bayer tonite.

    Reply
  18. Sandy says:

    Wow! I lost my 11 year old Beagle a few weeks ago. He was sick for about a month, started with loss of appetite, then when he did eat vomiting and diarrhea. Took him to our vet, then VSEC center. Said it was gastroenteritis, treated him with fluids and antibiotics but no improvement. Spent $$$$$ to no avail, finally had to put him to sleep. He had one of these collars on three months. I now believe this may have been the cause. Now my three year old Aussie started with diarrhea. After reading the above, just cut the collar off and going to give him a bath!

    Reply
  19. Melinda says:

    Seresto Collar – Very SERIOUS SFX from 6 month old large breed puppy! Within 2 days of use, puppy became very aggressive towards me, (lunging and biting) with seizure like activity for about a week. Called vet and vet said to put puppy down! I REFUSED!Sought elsewhere and found NOT behavioral issues, but Neurological issues from collar! Immediately took collar off and puppy back to normal, loving self. Contacted FDA, they referred me to EPA as collar considered an insecticide! Got refund back from vet BUT never used vet, again, either! Time for a petition against Bayer – Seresto Collar!!!

    Reply
    • BRIDGETTE says:

      where do i sign????

      Reply
    • Anonymous says:

      I agree regarding a petition against Bayer.
      I had the collar on my 14yr old dog for almost 2 months when she started to get very sick.
      Took her to the emergency room and they kept her for almost 5 days..ran alot of test and gave her a lot of antibiotics, which she is still on..she thanks God has recovered..but the doctor’s could not determine what cause her illness.I told them that she was fine until I put the collar on her..but they would not confirm that the illness came from the collar..I do feel otherwise though..I will never buy that collar again and Bayer should be sued..needless to say the collar was removed..

      Reply
  20. linda owen says:

    I have 3 cats & 1 dog. The collar does get rid of fleas, however 1 cat’s neck became raw & bloody. I had to remove the collar. The other 2 cats are ok with the collar. My miniature poodle just had a seizure last night. It scared the HELL out of me. I have read other peoples reports of seizures in their dogs. Once they removed the collar the dogs were ok. I will remove it from my dog & cats & will never use it again! It does work but at what cost to our animals?

    Reply
  21. robin says:

    My vet pushed this collar. My 100 pound chocolate lab had it on for a week was having spasms when sleeping. I said to my husband it seems like seizures. Then last night he tried to walk and couldn’t get his legs to work. We took him down and held him as he had a major seizure. Muscles stiff, eyes rolled back in his head, breathing heavy. The only thing new was this collar. I cut it off. I’m going to go throw it at vet after I get this poison off my dog.

    Reply
    • robin says:

      Since the collar has been off no more little seizures or big. Called the number on tin was told to wash him with dish soap. So they are aware, yet the commercials still run and no warning.

      Reply
  22. anthony marshall says:

    after putting 4 of these collers on my 4 dogs all had diarhea and stopped eating ,upon advice from the vet all of the collers were removed and 3 of the dogs slowly returned to normal.one dog remains gravely ill and the vet tells us his immune system is shutting down due to the chemicals in the coller,i have writen to beyen and still i await a reply.iam many hundreds of euros out of pocket because of this product ,ie cost of usless coller and hundreds in vet bills.i feel this company should remove this product from the market and admit they have a problem.i look to them for my money and if i loose my dog they will regret ever selling this product

    Reply
  23. Kathy says:

    using the collar on my 12+ yr old bichon, have always used topspot with great results. She has recently lost some hearing, don’t know if its age-related. No rash or itching, also no fleas or ticks. But we never had any before with topspot either. Don’t know if I like it.

    Reply
  24. Marianne says:

    my pitbull had a Seresto collar placed on him because of the large amount of tics we have in upstate New York ; approximately one month later he developed a quarter size area below his left ear are that he lost his hair and then subsequently became open and bleeding sore within 12 hours. I took him immediately to the vet who said it was not the collar of course but a “hot spot”, he’s had a significant change in his behavior depressed , since being treated for his hotspot and he’s been attempting to take the collar off since the moment I placed it on. So he’s obviously smarter than I am!!! I will be taking that collar off tomorrow and giving the company a phone call I did ask the vet if that could be the problem and she said she said” absolutely not “and I’m a physician. I personally don’t like that children can pet the dogs with these collars on and possibly absorb these chemicals I think that’s an issue as well. femaleCEO@Twiller ( I will investigate )

    Reply
  25. JANE says:

    STARTED USING SERESTO COLLAR ON OUR THREE DOGS SIX MONTHS AGO, GOT COLLARS FOR CATS FIVE MONTHS AGO. NO FLEAS, ONLY ONE TICK. WE RIDE OVER MANY ACRES, WOODS AND FIELDS, WITH DOGS SO ONE TICK IS FANTASTIC. CATS ARE IN AND OUT. CAT THAT HAD LOST MOST OF HIS HAIR TO FLEAS WHILE ON FRONTLINE NOW IS FULLY “CLOTHED”. ONE DOG HAD A SEIZURE A FEW WEEKS AGO BUT SHE HAD ALSO HAD ONE BEFORE USING THESE COLLARS, VET NOT CONCERNED AT THIS TIME AS SEIZURES CAN BE BROUGHT ON BY NUMBEROUS THINGS (OF COURSE I MONITOR HER CLOSELY). I DEFINITELY WILL BE REORDERING. NO ITCHING, SCRATCHING, CHEWING ON SELF–ALL IS CALM WITH OUR BELOVED PETS.

    Reply
  26. Susan says:

    Bought 4 collars 1 month ago for 3 dogs and 1 cat. My Chihuahua is really sick now. Feeling really stupid that I didn’t figure it out sooner. She started acting super hyperactive, running around not settling down. Last night her neck was swelled, very large, red eyes, odd leg spasm’s, legs kicking out behind her oddly, 2 huge bumps under her skin on back legs, was chewing on back legs. I held her all night to calm her, today she was laying in same spot most of day, has not peed or pooped today, just threw up, headed to vet in morning. Cannot believe I poisoned my dog! Cut off all the collars last night, worried that the other pets could have bladder, renal problems because they are older, will be 13 years old this summer. Do not put these on your pets, who knows what this is doing to their organs even if you don’t see outward symptoms!!!!

    Reply
  27. Marc says:

    I put the collar on for a short while like half hour and my dog started convulsing. As soon as we removed the collar and bathed him he was fine. It cannot be coincidence that all these owners report seizure type activity.

    Reply
  28. Patrick says:

    I have to believe that someone is paying most of you people off or there is a case of sheeple mass hysteria. I have used the Seresto collar on my Pyra-Dane for the last 4 months and NOT one flea or tick. We live in a heavily wooded area with lots of deer and before I used this collar I was using Advantix and found 6 ticks on her in one week. Since swithcing to Seresto not even one tick on her. A friend of ours who fosters dogs also uses Seresto and swears by it for her three dogs.

    Reply
  29. Sara says:

    My GSD cannot wear this collar. I am returning it as it caused her to have diarrhea and when removed within a few days her stools returned to normal.

    Reply
  30. Flo says:

    Hi ,I got my dog from the humane society 5yr ago she has had severe seizures from every flea product in liquid drop form on the market. I recently purchased you flea collar.seresto this is the only product I have found that works for my dog. Brandy has been seizure free for 2 months now.And flea free. Thank you so much. You have no idea what this means to me and my dog. Thank you very much.

    Reply
  31. Kim says:

    I put a seresto collar on my 2 yr old Westie in January and he has had very loose stools ever since. Took him to the vet to rule out any parasite or abdominal issues. He has also lost weight while eating the same amount of food. He has no parasites, so after reading all these negative reviews, I am taking this collar OFF for good and going back to Advantage which I had no problems with whatsoever!

    Reply
  32. Tina says:

    My mom’s dog had this same collar on. It has cause the dog to vomit, have diarrhea, stop eating,won’t drink fluids, and be lethargic. Liver failure had started. He has a very high white blood count. He is on meds to help with all this.I told my mom to remove the collar. I just knew that it was causing all of this. I had a cat one time that I had put a store bought collar on and he got very sick. So I had some experience with collars causing illnesses like this. I would not recommend putting any kind of flea and tick collar on your pets.

    Reply
  33. Felicia Richardson says:

    My experience using the Seresto collar has been pretty positive. Although strictly a non-clinical observation, my dogs have no fleas,flying insects seem to be repelled, and the Deer Tick seems to be effectively killed. I have found a few Wood ticks ( Dog Tick) that seemed to have lingered more than 48 hours though, I live in notorious Long Island and am out in fields often as I have working dogs.

    Reply
  34. Loretta Stephens says:

    My dog (Dasiy) is 4 years old I had her for two months and she had a SERESTO Flea and Tick colla,she ran away for 17 days, and when she came back she had ( 6 ) ticks in her, It cost me $80.00 I will never get another one , I will go back to the pills.

    Reply
  35. C from PA says:

    For those who experienced side effects, please report them to both your Vet and the EPA. This is the only way the manufacturer will be held to investigating and or doing anything about the side effects.

    Reply
  36. Dawana says:

    I bought this for my small Japanese Chin, who has had her first real experience with fleas. It worked almost immediately, I have not had one issue with her having sores or being ill. Now this is recent, I am wondering with a lot of these posts being older that if they changed the collar. I came here looking for chemical reactions for dogs with epilepsy.

    Reply
  37. Wendy says:

    I too listened to the advise from vet office. After wearing this collar for three days my lab had the most terrible night of watery diarrhea. I immediately took the collar off and looked up reviews stunned at what I’m reading. This is a terrible poison and nobody should use it on their pets.I hope my lab will be ok she’s only 8 months old

    Reply
  38. cowpatty says:

    After using many natural flea remedies on my cocker/border collie cross, I chose to use an oral flea medication that caused my dog to have a huge hot spot in the middle of her back and she would break out in a rash over her entire body. She was miserable. Then I purchased a Serestor collar. She did not experience the hot spots or nor did I see a rash. I am now on collar #3 and am finding the collar to be less effective as I am now finding a few fleas when I bathe her.

    In the beginning, I was very happy with this product as the release of the ingredients over a longer period of time seemed to supress the flea population.

    My search will once again start for another product. Serestor was good while it was new but now is like all the other products-the fleas are building resistance to the ingredients.

    Reply
  39. Laura says:

    I have had my dog wearing the Seresto collar for 2 months now–he has fleas and I have picked ticks off of him..Terrrible product and its ashame since it cost so much..DO NOT BUY THIS PRODUCT IT DOES NOT WORK………

    Reply
  40. GARY says:

    Bought this collar for our cocker spaniel because we were taking a trip down south..he developed diarrhea which turn chronic..the vet put him on antibiotics for colitis and we’ve had him on that for 3 weeks now…finally after reading these posts I removed the collar and he is doing much better…NEVER AGAIN

    Reply
  41. Michael Harper says:

    After having collar on 7 month old lab for 7 days a rash developed behind his ears and quickly spread over his entire body, from behind his ears down his back and sides and down his legs. My vet could not diagnose the rash even after skin srapings and hair and folical cultures. The rash was very red almost like poison ivy and then dried out and became scaley and flaky and very irritating to him. After spending $70.00 for the collar it cost me 400 + dollars at the vet.

    Reply
  42. linda says:

    It worked fine on the young dogs. On my 8 year old rott it cause lethologic, one eye droppy and she stopped eating and drinking. I took of days a go and it has been better

    Reply
  43. Donna says:

    Seresto Collar, My German Shepherd has had this collar on for almost a month now and he still has problems with fleas and ticks. He has some hair loss from irritation and I took it off of him today and will be using other meds. Save your money and you pet from the problems it causes, I do not recommend this at all.

    Reply
  44. linda says:

    My 8 year old rott is doing better since I removed the collar on 7/11. I am having the vet do blood work and urine analysis to make sure nothing else is going on. She is more aware ,eating and drinking and moving around. This really scared me. I don’t recommend this for older dogs. It also a med that should be monitored closely on any animal.

    Reply
  45. Robbin Kitts says:

    My Shitzu, Max had a grand-mal seizure 3 mon. after wearing collar as well as chemical burns on his neck from the collar. Luckily I’m a nurse with some pharmaceutical education,so I knew right away to rip the collar off. I was so mad at myself for putting it on him. The chemicals in the Seresto collar are neurotoxic. Some dogs can tolerate it I guess & others can’t. However I would be willing to bet that out of all the dogs that are still wearing the collar if the owners would stop and think about some of their pets behaviors they would probably say they’re different for the worse. Please pay special attention to your pets that are still wearing this collar. I’m hoping they recall them soon. Whether Bayer agrees they’re toxic or not. After all money isn’t everything.

    Reply
  46. Anonymous says:

    I wish I would have read these reviews prior to placing this caller on my dog who mom will watch very carefully in the next few days for any of the symptoms listed above

    Reply
  47. Renee says:

    I have two dogs: one Lab mix 87 lbs and one Shih Tzu 14 lbs. Immediately after applying the Seresto collars, both dogs started itching, the Lab incessantly. I removed the collar for a few days and the itching stopped. I reapplied the collars. The Shih Tzu calmed down after a few days. The lab started itching incessantly again. I was hoping that in time, the itching would stop and all would be well, but it’s been a month and she has gotten no relief. I don’t notice signs of fleas, but I do notice signs of dry skin. I would like to return the collar for a refund, but don’t know if that’s possible. Based on my findings, I cannot recommend the Seresto flea collar.

    Reply
  48. Mstarkist says:

    I have a 9 year old Cairn Terrier named Micki I got a
    Seresto Tick and Flean collar from the vet. Well after a
    few weeks I thought my Dog was acting strange. I took her to the vet because she had loose stools and started spitting up. I was given antibiotics and nausea pills plus pro-biotics. I have been giving her the antibiotics, she would not eat the food with pro-biotics she rallied for 2 days and now she will not eat or drink water. I believe no one should use this collar too many side effect. I will bring her back to the Vet to put her down Hearts breaking

    Reply
  49. Tracey says:

    I have two dogs that I used the Seresto collar on. The West Highland Terrier was able to wear the collar without a problem. The Ori-pei who has food/environmental allergies developed a chemical burn on the underside of her neck along with a bright red rash (contact dermatitis) on the underside of her belly and legs. We live in an area with a very high rate of Lyme disease and both dogs have been treated in the past for tick borne illnesses. I thought the collars would be a huge help because the Frontline did not seem to even last a month on my dogs. Started back on the Frontline after waiting period and added a homeopathic lavender spray from my groomer. So far no ticks/fleas found on either dog.

    Reply
  50. Mama T says:

    Purchased this collar and put it on my 65 pound black lab mix. Within a few hours she started panting excessively. I took it off that evening. The panting stopped within a few hours. Tried to put it back on a few days later. Within 5 minutes the panting started again. My dog doesn’t get fleas but I’ve seen a few ticks on her. Not worth the risk in my opinion. Definitely returning to our vet for a refund.

    Reply
  51. sharon cushing says:

    The Seresto small dog collar caused my dog to bleed internally! I spent over $2500 and saw 3 different vets who could not figure out the problem. It wasn’t until I put the collar back on him and he got really sick again that we figured out what it was! He is a 2 year old 11 pound maltese mix. His symptoms were: did not want to drink, did not want to walk on leash, did not want to eat, vomited, had red rimmed watery eyes, bloody stools, would come crying to me in pain, restless. The blood tests showed internal bleeding and after a while pancreatitis. The only thing that worked finally was treating him with fluids and bathing and soaking him in water.

    Reply
  52. Tim says:

    A few days after wearing seresto my dog started acting real weird. Her tail slid btw her legs and she walked hunched over and was frightened of everything. She started to scratch and bite at her back end area like something was in it. Her eyes started to have this glossy far away look and I thought she was going to attack me.

    Reply
  53. Eleanor says:

    We live in South Fl. and have a English Springer Spaniel, we have battled fleas forever , trying everything under the sun to make them go away, we took a leap of faith by purchasing the Seresto Collar and within 24 hours our dog was flea free….we have never had any problems with the collar and bought one for our 1 year cat and she has had no problems…..I hate that a lot of people have had such horrible issues with this product….but I can honestly say the collar works just as it is supposed to.

    Reply
  54. Millie Martinez says:

    While visiting NC my dog got infested with fleas and I went to a store where they sell pet products for cats and dogs.
    The man told me this was the best thing and sold me the collar for $56.99 and a 6-pack of tablets called Capstar for $28.50
    This was about two weeks ago. Well we have been home for almost a week and this morning my schnauzer did not even want to get out of his bed. I had met with some friends today and one suggested that I should probably take the collar off that it is harmful to liver and kidneys. When I got home I went to take it off and found he had a mass swelling under his neck the size of a half avocado. I removed it and I am praying that this clears up. They need to stop selling this poison!!!!!!!

    Reply
  55. Sandi says:

    Have a 10 year old Labrador and 2 year Chocolate Labradoodle that the collar works good for fleas and ticks. The only problem with the collar is it doesn’t last but only 5 to 6 months on the Labradoodle. I assume it is his thick coat of hair that I have to trim every 6 weeks. It is a good product for my dogs. I’ve used an internal pill product for my older dog in the past and stopped using it thinking it was causing him problems, but would never try to have it removed from the market, because my dog was sensitive to it.

    Reply
  56. Kur says:

    About a month ago I used a seresto Flea collar that my vet recommended on my 9 year old cocker spaniel. Within a day or so he became lethargic, no energy, etc. I called the vet, they swore by the collar. I removed it immediately and within 24 hours my dog seemed back to normal. However, several weeks later he began to have problems walking and a spasm in his neck. He went for surgery and the surgeons said he also had spinal meningitis. Prior to this collar, his checkup was fine, blood work fine. I am convinced that this exposure caused neurological damage.He died right after surgery.

    Reply
  57. Jaime says:

    Wow, after reading these comments I am beginning to wonder if my shih-Tzu Charlie is suffering because of this collar. He is no spring chicken (10) but the last month he has been sick. It started out with him just not being himself. Charlie is playful, but we noticed he just laid around. His appetite did not exist but would drink water like it was going to run out. Then he started yelping VERY LOUD and his back legs were very weak. He looked very swollen to us. This all happened after I bathed him and waited a day to put his collar back on. He did not get any better so we took him to the vet thinking he may have a pinched nerve in his lower back. He couldn’t put his neck down and always had it up. The vet did a very extensive exam and noticed the things mentioned above. His right back leg seemed to be more favored than the left and his neck. If he lifted it up higher than it was, or lower he would yelp in pain. We were sent home with tramadol. So a week goes by and Charlie is getting worse so we go back to the vet. This is where they did 3 exams. He has no broken bones, no herniated disks, but did have a bladder stone. So they gave us a steroid, an antibiotic and another pain medicine as the tramadol was not touching the pain my poor Charlie was in. Nine days ago, I thought I would give him another bath because he was making progress. HE loves a bath!! Again, I waited until the next day to put the collar on him and it all started happening again. We have taken the collar off now. It has now been two weeks since he has been on the medicine. He was feeling much better before the second bath. I am going to give it a few more days, and if he is not better then we will be going back to the vet. We also have a pit who is an outside dog. He roams around on the farm and we got him the collar first. Has worked amazing for him and we have had NO problems. He even goes into the pond and walks it. This collar has been the only thing that has kept the ticks n fleas off of him. This was the reason why we got two more for our small dogs. Again, Pressy (corgi mix) has not shown ANY of these side effects. Only Charlie. The only key link here is he got sick after I bathed him and put the collar back on him the next day. He did have some vomiting prior to this, but again, I didn’t think anything about it. Really just hoping he gets better. I do not believe this collar is for all dogs.

    Reply
  58. Jane B. says:

    I purchased the Seresto collar from my vet, but decided to wait until the weekend to put it on my dog so I could be be home to observe HER… just in case. Almost immediately after removing it from the package I began itching & tingling all over my arms. After putting it on my 23 lb. shihpoo, within minutes she started scratching like crazy , then frantically rolling around all over the sofa and floor. Lo & behold when I checked online re: Seresto “reactions, found this site and several others loaded with less than positive comments. Needless to say, the collar is now wrapped in plastic and back in the tin to be retuned to the vets ofc. Thank you all for your posts. They likely saved me from much worse problems than a few fleas. Sinserely, Jane in Richmond VA

    Reply
  59. Barbara says:

    We bought the collars for our 1 year old Chihuahuas. Only 1 came at first so we put it on the smaller dog (she is about 5lbs). We noticed our other dog not feeling well. She would shake and was lathergic and had lost her appetite for a day or two then felt better. The dog we put the collar on started having the same symptoms plus was scratching herself raw. I realized it must have been the collar after a few days and took it off and bathed both dogs. She started doing much better the very next day. We returned the collars and went back to using the drops with no issues.

    Reply
  60. Bev says:

    Bought collars for our three dogs. Put them on and within, one hour our small westie/chihauhua mix started shaking and vomiting. Removing collars and calling Bayer for a refund. Wish I would have looked at reviews before purchasing.

    Reply
  61. Suzanne says:

    Have been using Seresto Collars on all 6 of my dogs for about 2 -3 years. In that time have found NOT ONE FLEA on my dogs. There have been NO HEALTH ISSUES AT ALL. I have big dogs, and small dogs, none have had any problems. My vet recommended the collars to all of their clients, and report that they work great, even on farm dogs that live outside, like Great Pyrenees. No problems reported by anyone. So, I would recommend talking to your vet instead of believing anecdotal stories. Seresto works; and it’s safe.

    Reply
  62. wendy says:

    DO NOT WASTE YOUR $$$$$! Bought all 3 of my dogs the Seresto collar and they are full of ticks!!!! As ineffective as they are expensive!!!

    Reply
  63. Susan says:

    My vet recommended the Seresto collar for my two mini poodles. One of them already was dealing with a hot spot then got a bloody rash on her neck below her chin. I decided to remove and return the collars and got my money back from Petsmart. Then I read a LOT of reviews praising the collar, even one from a poodle owner and decided to order two from Drs. Foster and Smith. This time my dog’s hot spot had healed. After several days she developed the same bloody rash as before and I took the collar off. Later, she began to act strangely and desperately wanted to be held. I put chlothexidrine (the same cleanser I used for her hot spot) on the bloody rash and it seemed to help. But, she is still acting jerkily and strange, not like her usual self. My other dog doesn’t seem to be affected but after reading all the terrible effects other dog owners have had, decided to remove hers too. I hope to return them and get my money back. I will be taking my sick dog to the vet first thing tomorrow morning!

    Reply
  64. Melinda says:

    Used Seresto Collar on my 9 month old St. Mix. After 3 days caused seizure, lunging and biting behavior. 2 Neuro docs sed,”neurological”, not behavioral. Vet wanted to put my precious dog down. I refused!!! Took off Seresto collar immediately and absolutely back to her happy, calm self. HORRIBLE EXPERIENCE!!!

    Reply
  65. Anonymous says:

    I purchased 2 of these for my dogs these collars were put on the first week 1 of my dogs had runny stools and urinated all over, this dog is fully trained not to potty in the home,i did not relate this to the collar, second week this dog was lethargic and fell to the floor and had a seizure. At that time i knew it was the collar i removed it withen 24 hours he was much better,oh he also was very agitated too. My second dog had a collar alao. Very anxious and had behaviors not as bad as my first. I lost a dog to flea and tick pill from seizures i thought the collar would be ok ITS NOT, I called Bayer and they are giving back to me the cost of these collars… I will now never put in or on my dogs any poisen for fleas may i add i sm 56 years old and all my dogs when i was young ,when my parents seen fleas they bathed them none of this toxic chemicals were around…….
    .

    Reply
  66. Lynette Lee says:

    My sheltie has been wearing the collar for months, but all of a sudden developed a hacking cough. I removed the collar and his coughing has subsided. My other two dogs are not affected by it.

    Reply
  67. lynn says:

    our dog has had it on now little over 3 weeks. he has no problems that people have mentioned. it works awesome. we have no fleas and he had them really bad. our dog is 16 months old long hair . no problems so far and if we don’t have any., I will put another one on in 7 months

    Reply
  68. Walter says:

    I put the Seresto collar on my three dogs on January 1st. On the 5th one of my dogs became very ill and started to develop neurological problems. He went from a healthy active hunting dog to a dog that could barely stand up and lost all control of him back legs. We removed the collar immediately and took him straight to the vet. After many tests and blood work everything came back negative. He made recovery after a day of not having the collar on. Mt other two dogs have not had a reaction.

    Reply
  69. Bonnie says:

    I used the collar for several months on my schnauzer and she developed trouble breathing. Took it off, threw it away and gave her a bath and she got better, but didn’t seem to feel good. Vet could not find anything wrong. Several months later she started hacking cough and couldn’t stop gaging and breathing very fast. Could not get it to stop. I had to put her to sleep.

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