Natural Chemistry DeFlea pet and area sprays products are guaranteed to kill fleas, ticks and lice safely and effectively. These gentle yet powerful products work on all stages of insects' life cycle without using harsh chemicals or pesticides. Contains dioctyl sodium sulfosuccinate undecyclenic acid to soften the waxy skeleton of fleas, ticks, lice and other insects until the internal organs are saturated and the insect quickly dies. Will not lose effectiveness over time. All De Flea products can be safely used with other flea control products. Pet and area spray is ideal for treating pets, carpets, beddings, furniture and other areas pets frequent. Safe and effective spray eliminates fleas and prevents future infestations for up to three months. Reapply when necessary. Comes in 16.9-ounce spray bottle. Active Ingredients are dioctyl sodium sulfosuccinate 2.1 percent, undecylenic acid 0.5 percent. Other ingredients 97.4 percent, total 100.00 percent. Use only on dogs and cats- spray on surfaces and fabrics that may be infested, making sure adequate product is used to saturate areas where fleas may be hiding. Contacting fleas with product is required to achieve results. In addition to surfaces, spray entire animal, including legs and paws. Stroke the animal's coat against the lay while spraying to make sure the solution reaches the skin. Spray until entire coat is damp. To help solution penetrate to the skin, spray and work into the coat. Young kittens, adult cats, puppies, and all other small animals should be thoroughly rinsed off after application of pet and area spray. Due to some animal's grooming behavior, the product may cause mouth irritations if not properly rinsed off. Take care to rinse areas around the mouth. Dry animal thoroughly. Measures 9-4/5-inch length by 2-1/2-inch width by 2-1/2-inch height.