We got our cabin all ready this last spring, applied the stain and the clear coat and it looked wonderful. I went back to today to sart getting ready for fall and the edges of the logs have been chewed. In some places the logs (square-faced hand hewn) have been chewed along the edge like a piece of corn on the cob. I have seen both squirel and chipmunk in the area. This must stop, short of sitting on the deck with a shotgun, what stops them? I am at a loss as to why they are doing it anyway.
Hanging with the strings works for awhile, but the varments figure that out as well.
This is a good read about Eastern Gray Squirrels;
There is also a product called Shake Away to detor the the squirrels.
Any questions I would be happy to help you!