The Vectra for Cats & Kittens under 9 Lbs is a topical spot-on treatment that provides protection against fleas and ticks for up to 30 days. This product is safe for use on dogs and puppies 7 weeks of age or older. The Vectra for Cats & Kittens under 9 Lbs is easy to apply and is a cost-effective way to keep your cat or dog protected from fleas and ticks.