If left alone the eggs will hatch and new bees will emerge in the fall, only to return the following spring to the same places. And if that wasn’t enough, woodpeckers love carpenter bee larva, so you could wake up to the continuous rata tat tat  of Woody Woodpecker one morning. There is only one way to effectively deal with carpenter bees, treat each individual bee hole.

We can’t stress safety enough, climbing a ladder and dealing with bees requires a cool head.
They will last until the fall and kill the emerging bees so they can’t come back in the spring.
If they appear to start from behind the trim board, then it’s a good bet that you have carpenter bees.

Get rid of pests naturally Black carpenter ant size Get rid of red ants outside Rid x pest control lancaster ca