Well, never thought about carvers being borers, but your approach might work for both
I was thinking of long (6 inch) sticks and have put them in the truck camper then ran a portable generator for a while hoping the carbon monoxide will kill them. Don't know if it worked or not. I've read about a fellow who uses a heavy duty insect spray bomb. He has some type of sealed container that he puts the wood into and then tosses in the aerosol "bomb." Might be OK for small pieces but I need to find a way to handle larger pieces. Someone, somewhere, should have an answer??