Give Fido a gift that keeps on giving - being flea and tick-free! Elanco K9 Advantix II - For Dogs Under 11 lbs kills pesky fleas within 12 hours of applying the topical solution. Fleas that jump on your dog after will die within just two hours. It works on contact, so fleas don't have to take one last bite. It's waterproof, repels fleas and ticks, kills and repels mosquitos, and kills multiple flea life stages! Give Fido a gift that keeps on giving - being flea and tick-free! Elanco K9 Advantix II - For Dogs Under 11 lbs kills pesky fleas within 12 hours of applyi