Vet's Best Natural Flea and Tick Home Spray (32 oz) uses a unique blend of plant-based ingredients including Peppermint Oil and Eugenol (from Clove plants) that kill fleas, flea eggs, and ticks by contact. Also repels mosquitoes. It contains a natural, non-synthetic formula that is gentle enough for cats. The non-staining formula can be used indoor or outdoor on home surfaces such as pet bedding, cat furniture, pillows, blankets, upholstery, carpets, rugs, and outdoor surfaces. Our formulas are proven effective with ingredients that are trustworthy for you and your cat - guaranteed! Can be used on cats 12 weeks or older and around the whole family. Not known to be harmful to plants. For more protection on your cat, around the home, and in the yard try: Vet's Best Flea and Tick Waterless Bath for Cats, Vet's Best Flea and Tick Gentle-Mist Spray for Cats, or Vet's Best Flea and Tick Yard Spray.