Listen for daytime animal noises. If you hear odd little tapping, rattling and squeaking sounds that don't quite sound like either the wind or the house "settling," it is probably your resident squirrels. In the mid- to late winter mating season, noisy chasing and scuffling will be especially noticeable.
Examine the insulation and wiring in your attic. Squirrels will often disturb insulation and will gnaw to bits and tunnel through a wide variety of building materials. Squirrels tend to establish a litter area for themselves, where you will find copious quantities of raisin-sized squirrel feces.
Turn off attic lighting and look around for daylight coming through soffits, eaves or ductwork to determine where squirrels may be gaining access to your property.
Visually observe any opening you may have found to confirm that squirrels are present.
Things You Will Need
- If you are hearing attic sounds at night, it is likely that your invaders are nocturnal rats, mice or raccoons.