The Roof Rats (Rattus rattus) is dark brown to black with lighter underside and typically measures 13–18 inches including tail. Roof rats (Rattus rattus) are the most common rat species in the Phoenix metropolitan area. Unlike Norway rats, roof rats are agile climbers that prefer elevated areas — attics, rafters, palm trees, a.

Yes — the Roof Rats is considered a high-risk pest. Roof rats chew through electrical wiring (a leading cause of house fires), insulation, and structural materials. They contaminate food and surfaces with urine and droppings, spreading diseases including leptospirosis and salmonellosis.

In Arizona, roof ratss are most often encountered in the following situations: Droppings (banana-shaped, 1/2 inch long) in attics, along walls, or near food sources. Gnaw marks on wood, wiring, and food packaging. Greasy rub marks along walls and beams. Scratching or scurrying sounds in the attic at night. Partially eaten citrus fruit on the ground.

The Roof Rats is most active during: Year-round; most active fall and winter. Arizona's warm desert climate can extend activity periods compared to other states, so year-round vigilance is recommended in the Phoenix metro and surrounding areas.

Trim all trees and shrubs at least 4 feet from the roofline. Harvest citrus promptly and remove fallen fruit. Seal all gaps larger than 1/4 inch around the roofline, eaves, and utility penetrations. Store food in sealed containers.

Exterior bait stations, snap traps, and exclusion work to seal entry points. A multi-visit program is required to eliminate the population and prevent re-entry.

If you are seeing roof ratss repeatedly, finding evidence of an established population, or if DIY treatments have not resolved the issue within a week or two, it is time to call a professional. Pest Control Bros offers free inspections and same-week service across the Phoenix metro area — no contracts required.