A dirty crawl space should not be ignored, since rodent droppings, urine

https://sjc1.vultrobjects.com/home-blogger/top-attic-rodent-proofing-in-san-diego-county-2026.html

A dirty crawl space should not be ignored, since rodent droppings, urine, and nesting debris are biological contaminants that can affect the air inside your home.