When it was all said and done...
This is what the inside of the tunnels looked like... each compartment was filled with some sort of "bee's wax"(haha) and I'm assuming the eggs were also inside
The pile of wood
So if anyone wants to know how to kill carpenter bees, maybe you shouldn't ask us haha... This shelf was an un-important storage area in our garage that needed to be cleaned up anyways and came with the house when we moved in, so we just demolished it, and the bees with it.
And another thing, if you are going to stand and watch, please control yourself. Keep the squeels to a minimum, and don't hit yourself in the face with a mag-light like I did. I'm usually pretty fearless, but bees give me the willies!! I was holding a large mag-light for Adam so he could see, and some little fly or gnat got in my face, I screamed and nailed myself in the cheek with the mag-light.... ouch! No bruise thankfully haha... all I'm saying is if you can't take the heat get out of the kitchen... I had to let someone else take over the flashlight responsibility, I obviously can't take the heat.