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My pet had Hartz flea treatment. Can I use Advantage Multi after a bath?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | unspayed | 4 lbs

hartz flea and tick treatment used on Monday bath given on Wednesday. Can i use advantage muliti on her after the bath?

1 Answer

Most Helpful Answer

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Answered By Vanessa Yeager DVM MPH

Veterinarian

Published on August 29th, 2018

Hi and thanks for posting on Petco Pet Education Center, formerly Petcoach! If the Hartz flea and tick was applied and then was given a bath a couple days later, the product is already absorbed in her system. A bath two days later will not wash off the product. I would not recommend using the advantage multi in addition as this will be an overload on her system and may Rose sick. Better safe than sorry on this one. I hope this helps!

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