Some signs that you have a rodent may include: - Sounds of scampering, scraping, or clawing in the attic. - Chew marks on furniture, clothes, and food products. - Distinct droppings: most rat feces resemble a raisin in color, shape, and size. It will be dispersed throughout the house, and not left in piles or trails. - Brown, dirty, or greasy pathways where the rat has been running.