My tenants tell me that they hear an animal (possibly a raccoon) in the attic. This is an old (1880s) three story row house with a flat roof and a pretty low (2 ft average, maybe) attic. The house was totally renovated 10 years ago and I'm not very familiar with the attic situation or where the animal might have entered the attic.
I was told it sounds like at least a couple relatively large animals are scampering around the attic and occasionally they make whimpering growling noises. They seem to be most active in the morning between 5 and 7 and I don't usually hear them during the day (maybe they are nocturnal or maybe I'm just not at home during the day).
How do I deal with the situation?
Edit: Alright, I betrayed the DIY principle and hired a professional. He found squirrel droppings and no proof of raccoons or any other animal. He found two wholes and filled them with metal screens attached with screws and Liquid Nails. He also put a trap and is going to check it in a few days. Cost was rather steep: $395 total. Next time I may do this myself. Although, honestly it was not an easy job for him especially in one of the corners where space was tight. Also, the dust, droppings and fiberglass insulation makes this job unpleasant.