K9 Advantix II Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention for Large Dogs, Count of 4

K9 Advantix II Large Dog delivers vet-recommended treatment and prevention of five pests, including fleas, ticks, mosquitoes, biting flies and lice. Within 12 hours of application, K9 Advantix II Large Dog repels pests and kills fleas on contact so they don't have to bite your dog to die. This monthly, easy-to-apply topical formula is fragrance-free, waterproof after 24 hours and there's no prescription needed.