Exclusion work is used to prevent intrusions or re-intrusions of many animals into the home, building, or other areas. It is often performed immediately after removal of pests, but is also used when a review indicates a high risk of intrusion exists. There are a variety of approaches AA!! uses, depending on the situation. The pictures below show a before and after view of a basic wire barrier to prevent under-porch nesting by animals such as skunks and woodchucks. To see view of installation technique underground point mouse to pictures below.