Raccoons are one of the most commonly dealt with nuisance animals. They have adapted to living with humans. They have learned that garbage cans and dumpsters are excellent sources of food, and that houses are excellent habitat. A mother raccoon will often tear a hole in a roof to access an attic, where they will make quite a mess and a lot of noise. If you have a raccoon in the attic, it’s going to make a big mess and leave a lot of droppings.