Even a properly maintained home can have issues with insects; carpenter bees being the most destructive.
Log home customers taking note of bumblebees flying about under the eaves of their homes are probably actually seeing carpenter bees.
Carpenter bees resemble bumblebees in both size and appearance, but are not social insects. They construct their nests in trees or in framed buildings. If you see a number of large bees hovering near the eaves of the house or drilling in wood, you have carpenter bees.
We address carpenter bees by puffing Drione into each hole and then plugging the holes when the bees have gone. There is no known method to keeping carpenter bees away from a wood home; However, there are things you can do to deter the bees such as adding “Bee Gone” ” NBS 30″ or “Bug Juice” to your stain. Even so, these products are limited in the amount of time they can deter insects.
Log Building Maintenance and Restoration also recommends Carpenter Bee Traps as a deterrent however this product only works when the old holes have already been filled.