Raid Wasp & Hornet Killer 33 insect spray kills hornets wasps yellow jackets and mud daubers on contact and is electrically non-conducting up to 32 500 volts. Our stinging insect killer aerosol sprays up to 22 feet allowing you to spray from a safe distance. Raid s flying stinging bug insecticide is effective in killing hornet and wasp nests too. Just shake well and apply with the wind directly at the nest to remove it. The best time to use this wasp nest spray is early in the morning or early in the evening when activity is minimal around the nest.