This one tells about hanging a piece of fish just over soapy water in
a small tub. Nearly zero cost:
www.alaskaoutdoorjournal.com/Departments/Tips/yellowjacket50.html
It appears that to get rid of carpenter bees, you need to buy (or
maybe make) a trap chamber. It appears to be a board like hollow
thing with holes attractive to the bees but inside is some sticky
stuff, or poison, that does them in.
Male carpenter bees have a big yellow spot on their fronts and do not
sting. The females do not and DO sting.
At this link:
<http://64.233.169.104/search?q=cache:znQP1tDxmz8J:www.nobugs.com/pdf/
Jon-Stewart.pdf+carpenter+bee
+traps&hl=en&ct=clnk&cd=33&gl=us&client=firefox-a>
I find the advice to put a bit of Sevin dust in the hole, plug it
with aluminum foil, and then putty over the hole.
Roy
Roy Morgan
k1lky AT earthlink.net
Lovettsville, VA 20180