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My dog still has fleas. Is a flea collar safe with topical treatment?

Updated On September 23rd, 2025

Pet's info: Dog | Boxer | Female | spayed | 2 years and 1 month old | 43 lbs

I gave my dog her monthly flea and tick topical treatment at the 1st of the month. The past few days I’ve been finding a flea on her about once per day. I have treated my apartment multiple times and I always find them after I’ve taken her outside so I think she is picking them up when we go on walks. is it safe to use a flea and tick collar even though I’ve recently given her a topical treatment?

1 Answer

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on August 9th, 2019

Thanks for using Petco Pet Education Center, formerly Petcoach! This depends on the product you used and the collar you are planning to use. Keep in mind that all these products have a different active ingredient and may interact. Please consider writing another question providing this information or contact your veterinarian for further advice. Have a great day!

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