Frontline Plus for Cats and Kittens (1.5 pounds and over) Flea and Tick Treatment, 3 Doses WATERPROOF FLEA AND TICK TREATMENT FOR CATS AND KITTENS: Frontline Plus for Cats provides waterproof, fast-acting, long-lasting flea and tick treatment and control for your cat. This product is approved for use on cats and kittens 1.5 lbs and over. BREAK THE FLEA LIFE CYCLE WITH FRONTLINE: Frontline flea and tick treatment for cats kills adult fleas plus flea eggs and larvae to stop existing infestations and prevent establishment of new infestations. KILLS FLEAS AND TICKS: Frontline flea and tick treatment for cats kills fleas, flea eggs, lice, and ticks. This flea and tick treatment kills ticks, including those that may transmit Lyme disease TRUSTED FLEA AND TICK PROTECTION FOR CATS: Frontline Plus for Cats has been trusted by veterinarians for nearly 20 years. Made with 2 tough killing ingredients, fipronil and (S)-methoprene  one to kill adult fleas and ticks and the second to kill flea eggs and larvae  this fast-acting, long-lasting protection provides flea and tick control for cats and kittens 8 weeks and older. LASTING FLEA AND TICK PROTECTION: Frontline's long-lasting formula is stored in the oil glands of the cat's skin to give non-stop flea and tick protection for a full 30 days. Frontline flea and tick treatment for cats works non-stop for a full 30 days. A 3-dose supply lasts for 3 months.