The Hungry Puppy is a proud carrier of Capstar. Capstar provides rapid elimination of fleas (Ctenocephalides felis) on dogs, cats, puppies and kittens 4 weeks of age, and older. It can even be used on pregnant or lactating females and breeding male, and female dogs, and cats. Capstar starts working rapidly and kills over 98% of the fleas on the pet within 6 hours; all adult fleas are eliminated 24 hours after a single treatment. It starts killing fleas in as little as 15 minutes. Capstar’s wide safety margins make it ideal for in-clinic treatments.