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My 2-3 month old kittens have fleas. Can I use Capstar and Advantage II?

Updated On September 23rd, 2025

Pet's info: Cat | American Shorthair | Male | 3 months and 9 days old

I am getting two feral kittens, between 2 to 3 months old, from a coworker's farm. She says they have fleas. What is the best product to use for them? I bought Capstar because it works almost instantly on adult fleas. But my coworker recommended Advantage II for kittens because that continues to prevent fleas. Can I use both?

1 Answer

Most Helpful Answer

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Answered By David Darvishian

Veterinarian

Published on December 10th, 2017

Hi and thanks for using Petco Pet Education Center, formerly Petcoach! Sorry to hear about the flea problem. Yes, you can use Capstar with any topical flea/tick medicine as far as I know. I don't know of any that Capstar is contraindicated. Great question and good luck.

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