Well I'm absolutely fed up chasing bees with a badminton racket only to look like a fool when they outsmart me. I had to do something. I found a bunch of things online about carpenter bees, and how to trap those buggers. All the articles and how to's I found we pretty helpful and basically led me to make this little gadget. I'm still relatively mystified as to how it works, are the bees really that dumb? Well apparently they are! They go inside and fall to the bottom, done. My only qualm with all the traps that I saw that were "homemade" is that they were hideous. Who wants a crappy looking bird house with a water bottle hanging from it? So I decided to fancy it up a little bit. It's pretty easy really, instead of an old soda bottle, I used one of my favorite beer bottles, the 22 oz. version obviously. And with a couple extra passes over the table saw, voila! You just pop off the bottle on the bottom and pour out the bees you've caught. I suppose I could paint it fancy, or CNC something cool on it, but it literally took me 5 minutes to make, so I suppose I'll just let it bee (pun intended). Here are the basic measurements. Obviously, the bottom hole will have to fit the bottle you wind up using. The half inch holes in the sides are angled upward about 10° from perpendicular, toward the roof. I think this is pretty critical for trapping the little guys, I believe they can't find the hole again once they've entered, so they use the bottom, but this is purely speculation.