Topical prevention and treatment of ticks, fleas and mosquitoes for monthly use on dogs and puppies, K9 Advantix 55 (imidacloprid/permethrin) For Dogs and Puppies (7 Weeks and Older, 21-55 lbs.) Label. Read The Entire Label Before Each Use DO NOT USE ON CATS For the Prevention and Treatment of Ticks, Fleas and Mosquitoes on Dogs * Available only through licensed practicing veterinarians * Repels and kills ticks including Deer ticks (vector of Lyme disease), American dog ticks (vector of Rocky Mountain spotted fever), Brown dog ticks (vector of ehrlichiosis), and Lone Star ticks for up to four weeks * Kills 98-100% of the fleas on dogs within 12 hours and continues to prevent infestations for at least four weeks * Kills fleas before they lay eggs * Larval flea stages in the dog's surroundings are killed following contact with a K9 Advantix treated dog * Repels and kills mosquitoes for up to four weeks * Remains effective after bathing and swimming * Convenient, easy to apply