KILLS FLEAS, TICKS, FLEA EGGS AND LARVAE Frontline Plus For Cats provides fast, effective and convenient treatment and control of fleas and ticks for cats and kittens 8 weeks or older. Frontline Plus For Cats remains effective even after bathing, water inmersion, or exposure to sunlight. Do not reapply Frontline Plus For Cats for 30 days.Contains 3 doses (3 month supply)