Inc. There are several species of squirrels, but here we are covering the tree squirrels that inhabit the attics causing damage and noise.
Squirrels are abundant in the wilds because their natural predators are less abundant.
Because of this population increase and a decreasing natural habitat due to construction, we start to see them in our attics. They seek warm, safe shelter during the fall and winter months in particular. To date we have not found anything quite effective in running them out and keeping them out of attics spaces. Even at that, after sealing up their entry points, they would gnaw inside making another entry point. A trapping program is best.