FRONTLINE Plus for Cats provides waterproof, fast-acting, long-lasting flea and tick protection that's proven to kill fleas, flea eggs, flea larvae, chewing lice, and ticks that can transmit Lyme disease. | Break the flea life cycle with FRONTLINE Plus for Cats. Specially formulated with fipronil and (S)-methoprene to kill existing adult fleas, flea eggs and flea larvae to guard against further infestations for flea & tick control. | Trusted by pet owners for over 20 years,* FRONTLINE Plus for Cats can be used on kittens as young as eight weeks old, weighing 1.5 pounds or more. *Data showing 20 years of trust in killing fleas and ticks is on file at Boehringer Ingelheim. | One monthly dose provides protection from fleas & ticks for a full 30 days. | Even indoor dogs need flea and tick control because you or other pets in the household may bring fleas into the home. These fleas can lead to a flea infestation. | FRONTLINE Plus also comes in a formula designed for dogs and puppies, 8 weeks and older, weighing 5 lbs and over, providing the same reliable flea & tick protection. | Treat cats and dogs in the home monthly to effectively control fleas and ticks and prevent the establishment of new infestations- subscribe & save today to make it easier to keep your cat or dog protected year-round and make sure you never run out.