Can enter holes one-half inch in diameter or larger. They enjoy heights and climb on power lines and trees to get on roofs. Their damages to roofs and electric wires can be extensive are costly.
Dig and gnaw to gain entry into buildings and foundations causing damage. Outdoors they live in shrubs and uncut grass. Carry various diseases that can be transferred to humans.
Can gain entry through a dime sized crack to seek shelter. Will eat almost anything. Their droppings and urination can cause food poisoning and lymphocytic choriomeningitis