How to Kill Hornets & Wasps

Notice more hornets or wasps lately around your house? If so, you might have a nest on your roof or nearby. This nest will not go away by itself; however, you have to be careful when killing them because you don’t want to try to kill them and injure yourself or make it worse by aggravating them. If you are allergic to either kind of insect, you must take even greater caution.

Things You'll Need

  • Overall jumpsuit
  • Hat with netting in front
  • Thick gloves
  • Hiking boots
  • Thick socks
  • Flash light covered with red cloth
  • 3 WD-40 spray cans or high quality aerosol spray cans

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Look at the insect and determine whether it is a bee or a wasp. Bees are more round and short. Bees serve a purpose of pollinating plants and flowers and should not be killed if possible. If it is a wasp or hornet, it is longer and thinner, and you should kill it. In addition, bees are less aggressive insects and won’t sting unless hurt. That is, bees will usually not sting you, while wasps and hornets most always sting.

Search around your house, including the roof, to see if and where the nest is. Do not touch the nest, and keep at least 5 feet away. Do not disturb the nest at all because wasps and hornets get agitated.

Go back inside the house once you have located the nest. It is recommended you wait until nighttime to try to dispose of the wasp nest. The wasps and hornets are in the nest (and not flying around) and more sluggish at nighttime.

Read the instructions of the WD-40 spray or the high-quality aerosol spray before you go out to dispose of the nest. The chemical spray is what will kill the insects. You could also use an insecticidal spray specifically for hornets, but any high-quality aerosol spray or WD-40 spray will work as well.

Put your protective clothing on once nighttime comes. Take the WD-40 or aerosol spray cans and go outside to the nest, making sure to not make too much noise. Stand an arm length away from the wasp nest. Locate the opening of the wasp nest and begin spraying the WD-40 or aerosol spray into the nest opening. Spray the entire can and repeat with the second can. Spray any wasps that escape. If you need a light, use a flashlight with red cloth, because hornets are attracted to light.

Leave the nest and go back inside making sure no wasps follow you. The next day (at nighttime again) go back outside (with protective clothing on) and dispose of the wasp nest. Be sure to take another can of WD-40 spray with you just in case you see any stray wasps or hornets still alive.

Tips & Warnings

  • If, at anytime, you do not want or feel comfortable disposing of the nest call an exterminator.
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