Have you seen a flea? It’s time to get Frontline Plus for Cats & Kittens, proven to effectively eliminate the entire flea and tick life cycle at the first sign of infestation. Frontline Plus for cats is fast acting and kills fleas, flea larvae, flea eggs, deer ticks, and chewing lice for continuous protection! Approved for use in cats and kittens over 8 weeks of age, as well as pregnant or lactating. Frontline is waterproof for ultimate protection after bathing or water immersion. When you apply Frontline, fipronil, the active ingredient, is stored in the oil glands under your pet's skin. It is then distributed continuously to the skin and hair of your pet through the hair follicles to fully rid of fleas!