PetArmor Plus Flea and Tick Treatment for Cats provides the same #1 veterinarian-recommended active ingredient, fipronil, in the same concentration as FRONTLINE top Spot. You get the same flea and tick protection at a significant savings. Pet armor for cats acts fast.It is an effective, long lasting, waterproof, and easy-to-use application for killing fleas, ticks, and chewing lice on cats and puppies eight weeks and older. Each box conatins three (3) topical application tubes for a 3 month supply of cat flea and tick control. For best results, apply flea & tick treatment for cats directly to dry skin on your cats's back-between the shoulder blades-on a monthly basis. PetArmor Plus topical flea treatment for cats and kittens 8 weeks and older for up to 30 days after application and helps prevents infestations of adult fleas. When used as directed, Pet Armor for cats stops infestations of fleas, flea eggs, flea larvae, ticks, and chewing lice. It also protects your pet from the mange mites that can cause severe skin allergies like scabies.