Sharrlee...here are some related posts
Im not sure how to control them but i do try and use wood putty to fill the holes they make because they tunnel in wood and lay eggs i think. I always try to plug the holes when i see one.
I find a tennis racket works wonders.
Bare wood, or wood that is not painted well allows these bees to start attacking the wood. The new bees will always return back to the nesting area so you need to stay on top of these bees for quite a long time to remove them.
With a log cabin you have tons of areas that becomes a great habitat for the bees.
Here is a helpful link that may give you some ideas. http://www.loghomecare.com/preservatives.html
But ideally you need to seek out the help from a professional exterminator. The treatments that you purchase over the counter simply do not work as well as the professional chemicals that they can use.
Bee sides, a self help treatment program tends to pollute the environment more so then the stronger stuff the professional uses under controlled conditions.
We've been trying out a new additive in our stain & paint work here...I think Charles with Peace Painting is also testing it....it's not very expensive and we'll be able to report back on it later this season. We started adding it to our exterior repaint jobs last Fall and I'm doing one now in Marietta with a similar problem
They are one of the easiest pests to control. The only problem is they can travel long distances The tennis racquet idea while it sounds silly actually is one way to control adults. But it will not control the larvae. Simple fix get any time of pesticide Wasp Freeze works well, if the container has a tube that extends out it is a plus.Take tube and insert into the bore hole. The bees go up and then turn at a 90 degree angle. Apply liberal amount of pesticide into hole. The bee will back oou of the hole and you can step on it. Wear shoes. Then take steel wool and stuff it into the hole and caulk or wood putty shut. Repeat process as many holes as you have.