You could also hear a scurrying noise as they move quickly across your attic. ... That's because it's common for rats and mice to make their way into your attic walls and start chewing on the drywall. As rodents chew through the walls, you may start hearing them in the lower levels of your home.

What's making a noise in my loft?

Noises in the loft can indicate that rodents or other wildlife may have taken habitation in your loft. Lofts are the ideal environment for a number of different animals including: rats, mice, squirrels, wasps nests and in some cases, bats.

Why do I hear crawling in my attic?

Likely culprits are rats, mice, Grey Squirrels, and Flying Squirrels. Grinding noises are made as rodents chew woodwork. They may be chewing to improve passageways or just for fun. This is a classic squirrel in the attic noise.