You may discover you have a raccoon in your attic once you start hearing scampering noises or loud scratching. If you are hearing noises at night, it may be raccoons because they are nocturnal creatures. It is possible to remove raccoons humanely from the attic. Raccoons can cause a lot of damage in attics and can even tear apart ducts and cooling systems, so they need to be removed as soon as possible. Raccoons have even fallen through the ceiling into people’s homes. Generally, raccoons won’t leave on their own. Raccoons are creatures of habit and they wouldn’t want to leave a comfortable space.