This service involves eliminating potential entry points to prevent pests from gaining access to a property. It is often a recommended part of a pest control strategy. Examples mentioned include sealing gaps around pipes, under sheds, windows, and basements [Source not provided in new excerpts]. It can involve using materials like steel mesh, wire wool, and expanding foam. Specific types of proofing mentioned are mouse proofing, rodent proofing, and solar panel bird proofing.