SAME EFFECTIVENESS AS FRONTLINE PLUS: The SAME amount of the SAME active ingredients delivering the SAME protection for a lot LESS! KILLS FLEAS AT ALL LIFE STAGES: Breaks the flea life cycle by killing all stages of fleas: Eggs, Larvae, and Adults. EFFECTIVELY ELIMINATES TICKS AND LICE: Zoguard Plus for Cats kills 4 different species of tick including those that may transmit Lyme disease. Zoguard also rapidly eradicates chewing lice. WATERPROOF: ZoGuard Plus for Cats is waterproof and will remain effective even after bathing, water immersion, or exposure to sunlight.