Guaranteed to work or your money back (For terms of guarantee, see back). Kills on contact. Use indoors & outdoors. Up to 5 ft targeted spray. Kills black widow, brown recluse & wolf spiders. Kills black widow spiders as they hatch. Formulates to kill large spiders & scorpions. Paralyzes & kills spiders fast! Questions or comments? Call 1-800-887-3524 or visit our website at www.blackflag.com. 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 dated store receipt showing the price you paid. Please allow 6-8 weeks for processing. Contains no CFCs or other ozone depleting substances. Federal regulations prohibit CFC propellants in aerosols.