Flying Squirrels and Overwintering The two flying squirrel species that live in the United States are the northern and southern flying squirrels. Both have been known to invade homes when the weather cools. However, while they ready themselves for a long winter's rest like most pests, flying squirrels do not technically hibernate. Instead, they lower their metabolic rates and body temperatures, allowing them to conserve energy. In order to keep warm, the nocturnal rodents huddle together in groups. Additionally, flying squirrels reduce their time spent outside of the nest when conditions become too harsh. Problems for homeowners arise when freezing weather brings the pests indoors. Having flying squirrel infestations in attics can be noisy, smelly, and damaging to property. Problems and Prevention While they may look harmless, flying squirrels can cause damage to residences from their gnawing, which destroys wires and walls. Additionally, accumulations of waste can be unsightly and create foul odors. Lastly, constant scratching and screeching sounds through out the night may disturb residents. Homeowners can try to prevent flying squirrels from overwintering in the attic by sealing all entry points and trimming tree limbs that hang over roofs. When these pests gain access during the winter months, be sure to contact the professionals at Critter Control to safely assist in removal.