Keep your dog protected in flea & tick protection, Flea 5X Plus for Dogs (by PetMeds) is a fast-acting, long-lasting waterproof flea & tick topical that's proven to kill fleas, flea eggs, flea larvae, chewing lice, and ticks that can transmit Lyme disease. Break the flea life cycle — This product for Dogs (using the same Active Ingredients as FRONTLINE PLUS for Dogs) is specially formulated with fipronil and (S)-methoprene to kill existing adult fleas, flea eggs and flea larvae to guard against further infestations for flea control. This product can be used on puppies as young as eight weeks old, weighing 5 pounds or more, and is easy to apply. Applied to a single point on your pet, the flea and tick control treatment covers your dog's entire body and deposits in the sebaceous glands. These glands act as a reservoir, continuously replenishing the treatment onto your pet, working even if your dog gets wet