Kills lice & their eggs on mattresses, furniture, car interiors and other non-washable items. Not for use on humans. Quality guaranteed. This product is Step 3 of a three step lice control system. Step 1: Kill lice with a lice killing shampoo. Re-apply in 10 days. Step 2: Comb out eggs & nits with a combing gel. Step 3: Clean home. Use this product for non-washable items. Washables should be washed in hot water and dried in high heat. Questions? 1-888-423-0139. www.topcarebrand.com. This Top Care product is laboratory tested to guarantee its highest quality. Your total satisfaction is guaranteed.