The best permanent rodent exclusion materials for San Diego homes include sheet metal, galvanized hardware cloth

https://judahojly160.dovetailscope.com/posts/why-escondido-homeowners-are-investing-in-attic-rodent-proofing

The best permanent rodent exclusion materials for San Diego homes include sheet metal, galvanized hardware cloth, copper mesh, stainless steel mesh or wool, cement, and caulk for sealing gnaw-prone gaps.