Kills fleas; ticks; chewing lice. Contains Fipronil - the active ingredient used in Frontline Top Spot for cats (Fiproguard for cats is not manufactured by or distributed by Merial. Frontline Top Spot is a registered trademark of Merial). For use only on cats of all weights over 8 weeks of age. Waterproof. Fiproguard provides three way protection that kills fleas, ticks, and chewing lice. Kills deer ticks that may transmit Lyme disease. Kills brown dog ticks, American dog ticks, and lone star sticks. Prevents flea reinfestation. Made in USA.