Hornets live in nests in colonies that are ruled by a queen. Worker hornets maintain the nest. Though hornets are feared due to their ability to sting, they are actually beneficial to the environment. A nest should not be eliminated unless it is in close proximity to an area where people congregate. Do not wear bright colors or have sugary drinks around the nest, as this attracts hornets and may result in painful stings.
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Make a solution of soap and water. Dish or laundry soap will work. Add a few drops of soap for every 8 ounces of water.
Wait until the sun goes down. The best time to control hornets is at night when the temperature is below 50 degrees Fahrenheit. Hornets are less active at night and have trouble flying at lower temperatures.
Pour the solution into the entrance of the nest.
Move away from the nest quickly. Allow the solution to work overnight.
Spray an insecticide into the entrance to the nest. Dust insecticides work better than liquid insecticides. Suggested types are carbaryl, chlorpyrifos, acephate and diazinon. Ensure that the insecticide is labeled for use in lawns. Leave the nest undisturbed overnight.
Cover the entrance of the nest with soil.