[Mr. Jazzy]

http://www.getridofthings.com/get-rid-of-carpenter-bees.htm

[gimme1ibertee]

Thanks a bunch....
so obvious....
should've thought of it before. DUHHH!!!

[Hot Tabasco]

If you notice that the colony is relatively small, you may want to consider waiting outside of the nest with a vacuum cleaner while poking the nest with a stick.

I suggest you wait outside the nest in the morning till after they all leave for work then plug the doorway so they can't get back in when they come home.