The heat has done what the exterminators couldn't

For those of you that don't know, we have carpenter bees that live in the wood patio covering in our back yard. A few days ago I noticed about seven of the bees lying on the ground pretty much dead and a few were not formed all the way. I washed them into the plants and wondered if it was the heat that was killing them. Yesterday a few more appeared and then today there were about twenty of them on the ground and a few were really almost just larvae still. My hypothesis is that the heat is baking them in the wood and they are coming out to escape and then just bake on the patio. I almost feel bad but I know that I will now have about 30 less bees to deal with later on. The exterminators that have been out two times now have never taken out this many.