Controlling carpenter bee damage is best done by preventing it in the first place and one way to do this is to use carpenter bee traps to kill the adult bees thus controlling their population. Carpenter bee traps rely on the fact that the bees will reuse empty holes if they can find them. If you watch a bee you will see that they will check out any dark spot on the wood surface to see if it is a hole. It is only if they can't find a pre-existing hole in a piece of wood, that the bees will drill new ones. Carpenter bee traps are often hollowed out pieces of wood or plastic boxes with open holes the bees can enter. Once the carpenter bees are inside the trap they find they cannot get out and will die.
5-15 foot range of effectiveness
No chemicals or skill needed
Does not attract honeybees
Hangs, mounts, or sets on any wooden structure
Catch and release optional
Will not bring new carpenter bees to your property