Hot Shot Wasp & Hornet Killer3 aerosol kills on contact and eliminates the nest. With a jet spray of up to 27 feet, this product also kills yellow jackets, tent caterpillars and scorpions for outdoor use only. Hot Shot Wasp & Hornet Killer3 is non-staining to most home siding depending on age and cleanliness (before using in areas where the spray may contact home siding, test in an inconspicuous area and recheck in a few hours). For wasps, hornets and yellow jackets, apply at sunset when insects are least active. Stand a safe distance from the nest don't stand directly underneath. Spray the nest until soaked this product's powerful spray will also kill insects that return to the nest over the next few days. Read label for complete instructions before use.