Certifect Flea and Tick Spot On for Dogs Review


Are you looking for a heavy-hitting flea and tick control product for your dog but can’t decide which product is best?

Let us help; today we’re going to take a look at Certifect to see what’s in it and determin whether or not it’s safe for your pet. We’ll also take a look at what other users have to say about it.

Company Claims

Certifect is a product produced by the makers of Frontline that addresses ticks as well as fleas. In theory, it’s a step up from Frontline Plus, one of the leading flea treatments on the market today.

According to the manufacturer, Certifect contains the same ingredients as Frontline Plus along with another super-ingredient that kills ticks, too. Certifect supposedly kills:

  • Fleas
  • Ticks
  • Flea eggs
  • Flea Larvae

The treatments come in a 6-month supply packaged separately for small, medium, large and extra-large dogs.

The company offers a money-back guarantee as long as you purchase the Certifect from a vet and use it on all your pets for at least 3 months.

Active Ingredients

  • Fipronil
  • Methoprene
  • Amitraz

Supposedly, the amitraz works to provide stronger and longer acting tick control.

How it Works

Fipronil acts on the flea’s nervous system to cause hyperactivity that leads to death. Methoprene is a growth inhibitor that acts to keep larvae and eggs from maturing. Amitraz is the main ingredient in many mange, flea, tick and mite dips for dogs and comes with some pretty stringent warnings and side effects including lethargy and wobbliness for several hours after application.

What Are Users Saying?

Though there are some people who are extremely happy with the product, there are many others who have reported lethargy, loss of bowel control, wobbliness and even death. These symptoms seem most prevalent in toy breeds, older dogs of all breeds and sensitive breeds such as husky/collie breeds of any age.

Even users who use the product successfully report that it smells awful.

The price is comparable to Frontline at about $15-$20 per dose.

Usage Information

It’s a typical spot on treatment; you just apply it all in one dose right between the shoulder blades. Allow 24 hours for the product to dry before bathing or swimming and reapply monthly.

Don’t use on cats or dogs less than 5lbs or 8 weeks old though it’s supposedly OK to use on dogs that live with cats.

Product Warnings and Side Effects

We’ve already touched on actual side effects reported by owners but the product warns that lethargy or other neurological symptoms may occur within the first 24 hours after application. That’s why it’s available from a vet.


It seems that this product has some pretty heavy-hitting side effects for sensitive dogs so if you decide to use it, do so only the careful observation of a vet and plan to be home for several hours after application so that you can keep an eye on your dog. We don’t recommend use on any dog, though.To find flea drops that we do recommend, click here.

If you’ve used Certifect, please let us know how it worked for you in the comments section below.

3 Responses to “Certifect Flea and Tick Spot On for Dogs Review”
  1. Nevena says:

    After reading so many negative reviews and feeling deeply sorry for the people whose dogs had severe problems with Certifect, I was totally freaked out. Since I simply had to do something about my dog’s flea and thick problems, I decided to give it a try. I have a 11 months wire haired daschund and I applied Certifect yesterday. I am relieved to say that the only side effect he experienced (for now ) was a bit of drowsiness (this side effect is stated in the product info). Good luck to everyone, I hope we say good riddance to fleas and ticks. Well, for a month, at least.

  2. Alvin says:

    Don’t use this product. My 3 pomeranians are now suffering from lethargy and can’t even walk straight. They are also not in their fun and active selves. We are watching over them as i write this post. We already washed them off so hopefully things will be better in the morning.

  3. Jody says:

    Will never use again. I have an indoor great pyr. She enjoys being outside so I used Certifex on her as a preventative. She has never had fleas or ticks since I got her a year ago. She is approximately 6 years old. 20 hours later she is wobbly, she is sleepy and exhibiting some minor neurological issues. I stumbled across this doing my research and may end up taking her to the Vet ER tonight. I scrubbed her in blue Dawn dish soap in an attempt to get it off her too. Now it’s watch and see.

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