K9 Advantix II replaces Frontline Plus, our former top pick for best topical flea and tick prevention, because many veterinarians say that, anecdotally, Frontline Plus seems to be less effective ...

Best OTC topical I chose Frontline Plus as one of the best flea treatments for cats because it not only kills fleas and and controls flea infestations but also kills four species of ticks (brown ...