I have 4 mixed breed dogs all litter mates ( chow - golden retriever ) one was severly allergic to fleas. I treated all with comfortis and fleas gone. The allergic dog started to grow hair back within weeks and looks and behaves like he was a pup again. Made a believer out of me and i would recommend comfortis to all owners with flea problems.
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4.67 overall from 9 reviews
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