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

https://gregorylneu028.zenbloomer.com/posts/how-much-does-attic-decontamination-cost-in-escondido-2

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.