Mammals such as raccoons, opossums, chipmunks and ground squirrels sometimes find their way into basements or crawl spaces. You can either live-trap and release the animal yourself or hire a nuisance wildlife control operator. Before you trap the animal you will need a permit from an Illinois Department of Natural Resources district wildlife biologist. You can request a permit HERE.
Click HERE if you have a snake in your basement.
The trap must be checked at least once every 24 hours. Once the animal is trapped, it should be released outside on the same property. Striped skunks are required to be humanely euthanized. Wildlife may not be relocated to another area without the written permission of the landowner. They may not be released in parks, natural areas, or state parks or preserves.
Be sure any holes or cracks are fixed before you release the animal or it is likely to return.