As per Natalie's suggestion, I looked into the bee rescue possibility. The LA bee guy charges $75 for an easy removal and up to $250 to remove them from a structure. Wah? The Frau won't pay for a real plumber, so she sure as hell isn't going to pay for bee removal. Unfortunately, I can't pay for it either. I'm sure the hive is inside the walls, which would mean cutting into the building. Yikes. Poor bees. I fear for their lives.