Roof Rat Inspection and Identification
Roof rats are generally considered as omnivores and eat a wide range of foods, including seeds, fruit, stems, leaves, fungi, and a variety of invertebrates and vertebrates. They eat about 15 grams (0.53 oz) per day and drink about 15 milliliters (0.53 imp fl oz; 0.51 US fl oz) per day. Their diet is high in water content. They are a threat to many natural habitats because they feed on birds and insects. They are also a threat to many farmers, since they feed on a variety of agricultural-based crops, such as cereals, sugar cane, coconuts, cocoa, oranges, and coffee beans.
Signs of Roof Rats for Pest Control:
Droppings – Their droppings are 1/4 to 1/2 inch in length, capsule shaped, with blunt ends. They are usually a shiny black, but may vary according to diet. Rat droppings are three times as large as mouse droppings.
Tracks - Outdoors, the runways of Roof rats appear smooth, well packed, and free of vegetation. Indoors, runways appear as clean paths through dust or dirt. Roof rats leave a hind foot track of about 3/4-1 inch. A mouse's tracks will be much shorter. Rats will also drag their tails, leaving a mark between their feet tracks. Grease marks (from the oil and dirt of rats) often appear along walls next to runways.
Urine Stains & Odors - Rodent urine deposited on rodent runways appear as a line of fine drops or streaks under an ultraviolet flashlight, or black light tool.
Sightings & Sounds - Since rodents are nocturnal and live secretively under normal circumstances, you can be sure that regular daytime rodent sightings indicate a heavy infestation. Various sounds that indicate rodent activity include gnawing, scratching, and digging noises.