I would love for this to somehow be a win/win situation for us and the bees. Can you help?" - Mr. M
Hello Mr. M,
Bees behind brick or concrete can be very difficult and expensive to remove. However, you are in luck. Michigan winters are very hard on all species of bees. Whether you have honey bees or some other kind of insect, it's very likely to die off over the winter. Honey bees have a 50/50 chance of making it. All the other flying/stinging insects will die soon after the cold weather arrives to stay. The most reasonable thing to do, in my opinion, is to just wait for nature to run its course. I think your problem will solve itself.
I hope that's an answer you like hearing, and good luck!