Safe Control of Wasp Nests

- Use aerosol insecticides made for this purpose -

Summary: Most yellowjacket wasp nests can be left alone as long as they are not located where the nest can be accidently bumped or stepped on. If treatment of a threatening is needed, however, use the methods outlined below for both aerial (above ground) and ground nests (below ground).

Jack DeAngelis, PhD

OSU Ext. Entomologist (ret.)

Two types of yellowjacket wasp nest

Yellowjacket wasp nests are built either above ground (aerial nests; right) or below ground (so called ground nests). Ground nests have a hole at the soil surface through which wasps enter and exit. For large nests this hole can be 2 inches (5 cm) in diameter. Aerial nests have a single entrance/exit hole usually near the lower apex of the papery nest (see photo right).

If either type of nest is built near human activity it may become threatening especially towards the end of summer. Aerial nests can be accidentally bumped and ground nests can be stepped on. Either case can result in swarming behavior and wasp attack. Threatening nests can be safely destroyed but keep in mind that most yellowjacket wasps are actually beneficial. These wasps prey on garden pests so only destroy nests that are actually threatening.

Do not treat wasp nests with gasoline or other flammable liquid. These liquids are both dangerous and illegal when used this way. Use the suggestions below instead.

A large aerial yellowjacket wasp nest.

Aerial wasp nests

Aerial nests, like the photo above, are normally easier to find but can be more difficult to control especially if located high above ground level. The same type of aerosol insecticide can be used on aerial nests but be very careful if the application requires climbing a ladder. Spray the area of the nest around, and into, the entrance hole. As with ground nests do this application in the evening. Remember, most yellowjacket nests are vacated by late fall so there is no need to destroy nests after the weather cools in early fall.

What are Yellowjacket Wasps?

How to Use Wasp Traps

How Do Wasps Sting?

Which Wasps are Dangerous Scavengers?

How are Paper Wasps Different From Yellowjackets?

If our information is useful click here to help us maintain and grow 'Bugs! You can also support 'Bugs by shopping through this Amazon link or the Amazon.com banner (left).

Mission: To provide accurate, up-to-date and unbiased information for solving common insect and mite problems around your home, business and landscape using least-toxic methods.

Jack DeAngelis, PhD,  , email:  [email protected]

Please see the Disclaimer statements as well.