Don't let annoying bugs pester your buddy! The Elanco K9 Advantix II Flea and Tick Prevention protects against fleas, ticks, biting flies, mosquitoes, and lice for up to 30 days on dogs. The topical, vet-recommended formula gets straight to work, killing fleas within 12 hours and preventing new infestations. Plus, it's fragrance free, waterproof after 24 hours, and effective both indoors and out. Simple application goes on in seconds. No prescription needed. Includes 2 monthly doses of flea and tick treatment. Note: Check product label for information on application and potential side effects. Defends against fleas, ticks, biting flies, mosquitoes, and lice for up to 30 days Topical, vet-recommended formula kills fleas within 12 hours of application Fragrance-free, waterproof after 24 hours, and effective both indoors and out Simple application goes on in seconds No prescription needed Includes 2 monthly doses