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Do vets recommend flea collars for dogs? Are they truly effective?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | spayed | 2 years and 10 months old | 20 lbs

Hello! Do you recommend flea collars? I hear more cons than pros and I wanted to get a professional opinion before I get one for Mia?

1 Answer

Most Helpful Answer

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Answered By Sara Farmer, DVM

Veterinarian

Published on August 16th, 2018

I think that certain flea collars can provide good protection against fleas and ticks for the right dog in the right area. Seresto is the product that I most often recommend. The collar has to stay on all the time, and bathing or swimming can alter the effectiveness of the collar, so if Mia is frequently in water or you don't want her to wear a collar all the time it might not be a good choice. Preventic is another collar, but there is concern for toxicity if the collar is ingested and there may be some concern if there are children or pets in the house that will be chronically exposed. I have also seen over the counter collars that have essential oils or pyrethrins as the active ingredient - in my opinion these don't work well. Your best bet is to ask your vet which collar they think would work best in your area.

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