Also using a solution of:

1. First add an oz. of Borax to one oz. of White Distilled Vinegar.

2. Add one tablespoon of "Finish" rinse-aid.

3. Add the above ingredients to one gallon of Distilled Water.

This should rid Carpenter bees, plus makes a good cleaner for glass, floors, and general cleaning in the home. Also effective on Asian Beatles (Lady Bugs).