Hot Shot Spider & Scorpion Killer, Aerosol, 11-Ounce, 12-pack KILLS SPIDERS AND SCORPIONS: Kills on contact. CONTINUES KILLING: Kills for up to 16 weeks. ALSO CONTROLS: Common household pests, including ants (excluding harvester, pharaoh and fire ants), cockroaches, silverfish, crickets and other listed insects. FOR INDOOR AND OUTDOOR USE: Spray Hot Shot Spider & Scorpion Killer both inside where listed pests may hide and outside. AEROSOL SPRAY: This water-based formula leaves no oily residue and no mess behind. Kills in seconds. Kills black widow, brown recluse &amp; wolf spiders. Use indoors and outdoors. Non-staining. Unscented.