K9 Advantix® provides an end to flea, tick and mosquito problems for dogs of all sizes. It is the only topical product that repels fleas, ticks and mosquitoes while repelling biting flies and killing chewing lice at the same time. K9 Advantix works efficiently and provides a long-lasting solution so you don’t have to worry about ongoing flea and tick troubles – or your dog’s health and comfort.