Inspection
Droppings: fresh droppings of feces are usually moist, soft, shiny, and dark, but in a few days they become dry and hard. When examined under magnification, hairs are usually visible in rodent droppings. Cockroach droppings never contain hairs and measure 1/25 inch.
Runways: outdoors these are narrow pathways of beaten earth swept clear of debris. Indoors greasy rubmarks are found along walls, steps, and rafters.
Burrows: found in earth banks, along walls, under rubbish or concrete slabs, and in similar places. When used the entrance will be free of cobwebs and dust.
Tracks: in dusty areas it’s possible to see footprints and tail drags.
Gnawings: rodents must gnaw something in order to keep their teeth short enough to use. Also, they gnaw to gain access to food and shelter.
