Advecta 3 for dogs is a monthly topical treatment and prevention of ticks, fleas, mosquitoes, biting flies & lice. Advecta 3 contains the same active ingredients used in bayer K9 advantix II for dogs. Advecta 3 provides broad protection against fleas, ticks, mosquitoes, biting flies, and chewing lice. It breaks the flea life cycle, killing all life stages of fleas, including adults, eggs, and larvae. Advecta 3 is a convenient monthly topical for dogs that kills through contact. This means that fleas, ticks, and mosquitoes don?t have to bite your dog to die.