Your pets are family, and PetArmor helps you confidently care for your cat, especially when it comes to flea and tick control. PetArmor Plus conveniently provides vet-quality protection without the expense of a vet visit. PetArmor Plus Flea and Tick Topical For Cats eight (8) weeks and older who are 1.5 pounds or larger is a waterproof, fast-acting, long-lasting formula that kills adult fleas and ticks plus stops the flea cycle dead in its tracks. This cat flea treatment has the same active ingredients as FRONTLINE® Plus for Cats. Get nose-to-tail 30-day protection with each dose at an affordable price. One three-dose package of PetArmor Plus Cat Tick and Flea Treatment offers three months of continuous coverage for most breeds (not recommended for hairless cats).