How To Identify A Rodent Infestation.
Appearance - Rats and mice are the most commonly problematic rodents in houses and businesses. Deer mice, house mice, Norway rats, and roof rats are all found in the United States.
Behavior - You may see a mouse or rat scurrying away when you open a garage door, shed, or cabinet. At times rodents will be brazen enough to run right across the floor in front of you. Seeing rodent droppings is often the first sign that a rodent has taken up residence in your home.