I have yellow jackets. If they have gone into the walls,
will I have a problem? Will the cold temperature kill them, or will they hibernate
until spring? Do I need to worry if the nest is inside the wall?
Some reproductive yellow jackets may survive inside the walls. They will come out in the spring looking to go outside. The reproductive yellow
jackets rarely sting, so I wouldn't be concerned about it. If the nest is in a very warm location, however, the nest could survive the winter. I would spray a small can of CB 80 Pyrethrin
directly into the entrance. Do this after dark. They are not as aggressive at that time.