Senergy is a convenient topical parasiticide for your pet pal that is designed to help prevent heartworm disease while killing adult fleas and deterring flea eggs from hatching for one month. It may also be used to aid in the treatment and control of ear mite infestations as well as roundworm and hookworm infections.We directly source prescription medications from manufacturers and wholesale distributors registered with the FDA and licensed by applicable state boards. Guaranteed genuine, and where applicable, backed by the manufacturer.