How to Rid of Japanese Hornets in a Tree Hole

Japanese hornets are also called Asian hornets.

The Japanese hornet, which is also called the Asian hornet, can grow up to 2 inches long. It is the largest species of hornet currently known and injects a venom into its victims that can dissolve flesh and sometimes bone. The hornet is native to in East Asia, primarily the mountainous regions of Japan, and is identifiable in your garden by its 3-inch wingspan and bright yellow head.

Things You'll Need

• Protective clothing
• Wasp and hornet spray

Instructions

1. Put on clothing so that all areas of skin are covered. It's a good idea to buy or rent a beekeeper's mask to wear over your head and face while treating the hornets. Otherwise, wear goggles and a hat to protect your eyes and head.

2. Wait until nighttime when the hornets are asleep inside the hole of the tree. Aim a can of wasp and hornet killer at the hole from as far distance as possible. Spray the solution directly into the hole until it is empty or until hornets appear at the hole.

3. Go back into the house and do not wait to see whether the pesticide spray works. If you notice the hornets coming out of the nest at any point, stop and seek shelter.

4. Wait one or two days and look for signs of activity form the tree hole, or evidence of Japanese hornets flying around the exterior of the home. If hornets are seen, repeat the treatment again the following night.

Tips & Warnings

• Check that all trash cans are securely covered as rotting food is what attracts the hornets. If you have a compost pile, consider buying or building an enclosed composter to prevent the bees from entering it and feeding.

• If you are allergic to bees, do not attempt to kill Japanese hornets yourself because their venom can be deadly. Contact a professional pest control company to remove them.

References

• Worsley School: The Asian Giant Hornet
• How to Get Rid of It: How to Get Rid of Japanese Hornets