Contains Nylar: Breaks the flea life cycle. Treats 1,600 sq ft. Prevents flea infestation for up to 7 monts. Kills fleas, flea eggs, flea larvae & ticks. Treat broad areas such as carpets, upholstery, rugs & hard-to-reach places such as baseboards & moldings. Kills fleas, ticks & dust mites on contact. For best results, use this product as part of a comprehensive flea & tick treatment plan. An effective flea & tick control program includes simultaneous, coordinated treatment of the home, yard & pet. Treatment & prevention go hand in hand, so it's key to treat all three areas. This integrated pest management approach involves inspection, cleaning & targeting eggs, larvae & adults with the appropriate insecticides. Follow-up treatments are almost always necessary as flea & tick problems will not be solved with just a one-treatment approach. This product is for home treatment. Kills fleas, flea eggs, flea larvae & ticks. Black Flag flea & tick spray plus growth regulator home treatment kills fleas, ticks, carpet beetles and dust mites. It contains a combination of active ingredients that kills adult fleas, as well as flea eggs and larvae. Nylar, one of the active ingredients, kills fleas by preventing them from developing into biting adults for up to seven months. When used as directed, this product will not stain furnishings or carpeting. Guaranteed to work or your money back (For terms of guarantee, see back panel. Guarantee: If you are not satisfied with this product for any reason, send your written request for a refund to the address below, together with the original dated store receipt showing the price you paid. Please allow 6-8 weeks for processing). www.blackflag.com. Questions or Comments: Call 1-800-887-3524 or visit our website at www.blackflag.com.