A woman called and said she had bees under her sink inside her kitchen cabinet. I thought she meant something outside, we have had plenty of those. She said no, it was in her house and the bees were under the sink. I went to take a look and sure enough there was comb and bees under the sink. She has single wall construction and the bees were coming in a hole in the wall. We removed them and I used a bottle cap and caulking to plug the hole. That was the first time in nineteen years I have ever seen something like that.