Hearing funny noises in your attic? You could very well have a squirrel problem. Squirrels are known to invade homes and make nests in attics and crawl spaces. The situation must be dealt with quickly and efficiently, because squirrels can transmit diseases and also cause structural damage to your house. Here's is a brief guide to resolving this issue. Signs One of the mainsigns that you have squirrels in your house is noise coming from the attic as the animals move about.