Apply frontline. place applicator tip through yourpet s hair to the skin level between the shoulder blades. squeeze applicator, applying entire contents in a single spot to your pets skin.Kills 98-100% of existing fleas in less than 24 hours. continues killing fleas for an entire monthor more. remains waterproof for 30 days, even if your cat swims or is bathed.
Active ingredients fipronil and s-methoprene for cats and kittens 8 weeks or older