Rats In Crawl Space

Snap traps live traps poison.
Rats in crawl space. Find out how rats are getting inside the building. Rats in a crawl space. The insulation may be ripped off of the staples or nails leaving it sagging at the nest site. There are 3 ways to catch rodents in a crawlspace.
Those rats are entering your home and crawl space somehow. Eliminate sources of water and lower humidity rodents many insects and mold and fungi prefer areas with high humidity seal all cracks and openings many pests follow the path of. Trap and remove the rats. Controlling rodents do not store food in your crawl space rodents will chew through a wooden cabinet to get to food.
There may be gnaw marks rats will chew on many items including wood aluminum lead plastic and mortar. You have three options. Loose bricks foundation cracks or damaged basement windows allow rats into crawl spaces. There may be loose sagging insulation if your crawl has standard insulation you may find evidence of rats nesting behind it.
Droppings gnaw marks and greasy smudges from their fur are signs of an infestation. Seal up all the entry points.