Advantage is a fast-acting, spot-on flea treatment for puppies and dogs. It comes in an easy-to-use topical applicator tube that should beapplied monthly to kill fleas, flea larvae, and lice. The formula kills fleas on contact, preventing the need for flea bites. Advantage flea treatment can be used on all dogs and puppies from birth. It is safe for use on pregnant and lactating animals.