Our cabin has been in our family for almost 50 years, and last year was the first time we had any bear activity. It knocked over the bird feeder pole. We replaced it with a much stronger T style and had no further trouble. This year, however they are around a lot. Feeders come in at night, garbage is locked in the garage, and the neighbor is very careful with his dog food. At night we put a wedge in the windows to only let them open a few inches. So far we have not had any interior invaders, but the cabin 3 doors down from ours did. They left food on a table right by an open window.