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My dog licked Hartz flea drops. How long until I see signs of illness?

Updated On September 23rd, 2025

Pet's info: Cat | American Shorthair | Female | spayed | 7 years and 10 months old | 9 lbs

I just applied Hartz Pro health Flea drops, behind Bitsys neck. She somehow managed to lick some off. I read online how extremely dangerous this piticular brand of flea drops are. I am so scared she's going to get really sick, or die! She's seems ok right now. How long would it take to notice a problem?

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1 Answer

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Answered By Jenny, DVM

Veterinarian

Published on December 15th, 2017

Most reactions from that medicine include drooling, shaking, tremors and seizures. If none of these are noted and she is walking and eating fine then you probably do not have anything to worry about. You can monitor for signs over the next 24 hours. In cases of reactions the best thing to do is bath the medicine off

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