Performance guaranteed. Natural. Long lasting flea control. For cats of all ages. Kills fleas by contact - fully effective up to 7 days - guaranteed! Also effective on black flies and mosquitoes. Natural botanical extract product that is pyrethrin free! Natural Chemistry LP represents that this product qualifies for exemption from registration under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). This product has not been registered by the United States Environmental Protection Agency. 3 Products - One Complete Program!: Use all three Natural Chemistry products to kill, repel and protect against fleas, black flies & mosquitoes in the entire pet environment. Natural Flea Shampoo; Natural Yard & Kennel Spray; Natural Flea Spray. See our full line of pet & home solutions at: www.naturalchemistry.com.