Carpenter bees can be annoying and cause damage to buildings. But you can control carpenter bees and minimize damage with simple, nontoxic methods. A couple of suggestions from Dealing With Carpenter Bees are:

• Paint wood that the bees are boring into.
• Plug carpenter bee holes by taping window screen over them. Remove the screen after a few weeks and fill the holes with wood putty.

According to information in Protect Your Pollinators, carpenter bees pollinate blackberries, canola, corn, peppers and beans. So they may be helping your garden produce more bountiful crops.