Rodent Exclusion for Crawl Spaces

Steel wool is highly effective at blocking small gaps and holes. Its coarse texture discourages rodents from chewing through it, and it can be used in combination with other sealants for enhanced protection. 

Metal flashing, such as stainless steel or aluminum, can cover gaps and cracks around foundation walls, vents, and other openings. It’s durable and resistant to rodent gnawing. 

High-quality caulking, especially those designed for exterior use, can seal gaps and cracks in walls, around pipes, and other small openings. Look for caulks with a silicone or polyurethane base for the best performance. 

Expanding foam sealants are useful for filling larger gaps and voids around pipes, vents, and other entry points. They expand to fill spaces and harden to create a solid barrier that rodents cannot easily penetrate. 

For larger holes or gaps in foundation walls, concrete or mortar can be used to create a solid, durable seal. These materials are particularly effective in areas that are prone to weathering and wear. 

Installing rodent proofing mesh or screens over vents and other openings prevents rodents from entering while allowing for ventilation. Ensure the mesh is made from stainless steel or heavy-gauge galvanized wire.  

Copper mesh can be used in smaller gaps and cracks. It’s durable and rodents cannot chew through it. Copper mesh is often used in combination with other sealants for a comprehensive rodent proofing approach.

Some specialized products are designed specifically for pest control, such as rodent proofing barriers that combine multiple materials for enhanced effectiveness.