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Is it safe to use fipronil and a flea collar on my cat at once?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Male | neutered | 7 years and 11 months old | 6 lbs

Can I use fipronil and a cat collar at same time? I've had a collar on them for about 3 weeks, just gave them a bath ( no collar on) and just curious do can I put back on collar and administrator fipronil. Not sure of brand of collar, can't remember...

1 Answer

Most Helpful Answer

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Answered By Maria DVM

Veterinarian

Published on December 12th, 2017

I would recommend only using one. I prefer topical over collars since not all collars work. There are plenty of topical medications for cats that help prevent fleas and ticks. Some topical you can apply monthly while others like Bravecto can be applied once every 3 months. Without knowing what type of collar and which fipronil product you are using I wouldn't use them together. I would also wait 48 hours before and after a bath before putting topical medication on. Thank you for using Petco Pet Education Center, formerly Petcoach.

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