Interesting. Bees are quite the creatures. I should study up on them. The trap is clever. One year we had some fruit flies in the house. I think they came from some produce we had just bought. Anyway I looked it up on the web and it showed how to construct a fruit fly trap. Very simple, a peice of typing paper formed into a cone, installed into a vase like a flower vase with a small opening, pour a little vinegar in the vase and the fruit flies will come and be trapped. It worked really good and I think we trapped 15 to 20 flies.