What do pest control companies spray what they call "bee repellent"??
Also, I did a huge cutout in the attic this past weekend, 12 hour job, it wasn't huge but very tough to get to from a tiny hole in the ceiling and the combs were in the next section over. Tons of ducts and pipes right above the bathroom attic space.
Anyways, in a situation where it's an attic, there's so much space, there's no way to stuff the entire attic with fiberglass insulation. And the homeowner checked with the builder and said smaller mesh would be against building code. So... now, how to prevent bees from moving in again in the future?