Crafty little suckers. My niece got a few stings, I was trying to remove the whole nest since it was in a single piece of insulation. They were coming back in as fast as I could throw other out. Amazingly I didn’t get stung once.Found a huge nest when we pulled out the tile wall behind the tub some years ago. When we pulled the wall down they swarmed us. I and helper got a few stings but we cleared the door and got it closed. A few got out into the house.
Trip to Ace and came home loaded for bees. Popped 3 aerosol bombs and grenades the bath room.
Outside we used brake parts cleaner to drop them mid air as they escaped. It took 3 more aerosol grenades to finish them off. The nest was huge.
They were coming in through a separation in the aluminum siding.