Product details Get rid of those pesky fleas with the Cheristin Flea Treatment Topical For Cats. The perfect solution for itchy kitties, this topical treatment is specially formulated just for felines. Cheristin works to get rid of fleas in the blink of an eye and comes with a ready-to-use applicator, so it is easy to apply. This treatment continues to work for a full month after application, which means no more meowing or scratching thanks to the safe and effective formula. A single dose of Cheristin for cats (spinetoram) kills fleas quickly and lasts a full month. Specifically formulated for cats, Cheristin is easy to apply so your cat can stay comfortable and protected. Cheristin's low-volume dose is gentle enough for all cats and kittens 8 weeks of age and older that weigh 1.8 pounds or greater. Cheristin starts killing fleas in just 30 minutes to provide quick relief for your cat. In a controlled study, it killed 98-100% of fleas within 12 hours. Cheristin for Cats Topical Liquid Flea Treatment, 6 Treatments Cheristin kills fleas for fast, long-lasting protection Gentle one size-fits-all flea treatment Start killing fleas fast within 30 minutes of application Lasts a full month for cats and kittens 8 weeks of age or older and 1.8 lbs or greater Killed 100% of fleas within 12 hours in controlled study Provides 99% flea control for a full month Easy to use applicatorleas in 30 Minutes,6 dose No original box