Mice in a crawl space may reveal themselves through scratching sounds at night, droppings, chewed openings

https://sethtrro759.raidersfanteamshop.com/how-much-does-attic-decontamination-cost-in-escondido-1

Mice in a crawl space may reveal themselves through scratching sounds at night, droppings, chewed openings, nesting material, or even unusual pet attention.