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Is my kitten drooling from flea spray? When should I call the vet?

Updated On September 23rd, 2025

Pet's info: Cat | British Shorthair | Female | 4 lbs

Hi, I have a 4-6 month old kitten, and all of a sudden, it has been drooling an excessive foamy substance along with water for the past hour on and off. I was wondering, could it be the fact that I gave her flea spray an hour ago? Or was it something else that could have caused it, and is this type of problem serious?

1 Answer

Most Helpful Answer

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Answered By Christie Long, DVM

Veterinarian, Certified Veterinary Acupuncturist

Published on January 29th, 2017

Flea spray can cause a reaction such as you're describing, especially if she ingests some of it, which cats will often do while grooming. Hopefully it's just a reaction to the taste of the spray, and will pass quickly. If it continues for more than a couple of hours, or if she becomes lethargy or unsteady, take her in to the vet immediately, as she could have a more serious reaction to the medication. Also, if the spray contains pyrethrin, have her seen immediately, as this is highly toxic to cats.

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