Features . Specifically formulated for small dogs puppies that are 8 weeks or older weigh between 6 22 lb. Active ingredients to potentially eradicate pests like fleas. Ticks chewing lice. Effective against pesky larvae flea eggs. Waterproof combination of s methoprene fipronil remains active even after baths exposure to sunlight. Can be conveniently applied to your pet once a month or as directed by your veterinary professional Specifications . Size Small. Weight 0 02 lbs