Their ideal habitat is a forest filled with oak, beech, and hickory trees which provide food and natural cover. They often build several nests in the trees within a certain area, using the each nest at various times. Some squirrels do not live in trees. Known as ground squirrels, these creatures make their nests in burrows in the ground.
Squirrels cause problems for homeowners by nesting in their attic. They enter attics for warmth and safety; and often to birth, nest, and raise a litter. These pests are ferocious chewers and will gnaw their way through wooden structures to get into the attic. Once inside, they make scratching noises (mostly at sunrise and sunset), leave droppings all over, and threaten all sensitive attic structures with their need to chew.