Richard J Kinch wrote in
:

Chris writes:

Any suggestions for getting rid of these bees?

If you're up north in a freezing climate, they'll just die off around
frost season, at which time you seal up the hole(s). They live off
flowers and starve in the fall when the flowers disappear. That's why
they're getting so ornery around Labor Day picnic time and going after
fruit-scented soft drinks. The queen hibernates to survive over the
winter and starts a new colony in the spring.

Where? In the nest in the attic? If that's the case will she croak if all
the exits are blocked in the spring? Covering all the entry points after
the main clan croaks in winter would seem in order.

So simply waiting is very effective.

The petroleum stream in a can is very effective, but it won't get
inside your structure to kill the nest. They can be nesting quite a
ways away from the entrance, so even tubing in insecticide is not
always effective.

A Raid fumigator would do it nicely if you can cut a hole into the
space, which is a bit challenging if they decide to come after you for
breaching their enclosure. Those things will kill everything in a
good sized room.