Spectracide Wasp and Hornet Killer aerosol eliminates wasp and hornet nests with a jet spray that reaches up to 27 feet. Use this product outdoors where insects live and breed. This product's powerful spray will also kill insects that return to the nest over the next few days. The non-staining formula can be used around most home siding depending on age and cleanliness (see product label for details). Also controls tent caterpillars, scorpions and ants. To control wasps, hornets and yellow jackets, spray at sunset when these insects are least active. Stand a safe distance from the nest - don't stand directly underneath. If it's windy, stand with the wind at your back to avoid spray drift. Spray the nest until soaked. Wait at least 24 hours before removing the nest. Do not use this product in or on electrical equipment due to the possibility of shock hazard.