Roof Rats

Rattus rattus

Color: Black or Dark brown

Size: 12-18cm

Weight: 150-250grams

Shape: Thin, Pointed nose, Large Ears and Eyes

Diet: Plant and animal feed

Habitat: Worldwide. Homeland Tropical Asia

Dr. J.M. Clinton, CDC - This media comes from the Centers for Disease Control and Prevention's Public Health Image Library (PHIL), with identification number #17952.

What are Typical Roof Rats Behaviors?

Climbing skills are developed. They like roofs and attics. They usually prefer nests in attics, ceilings, etc. They use materials to build nests.

They are active at night. They peak at dusk and dawn.

They prefer products such as fruits, nuts and grains. They have stacking characteristics. They usually feed within 300 feet.

There is a hierarchy in their colonies. Strong sense of smell, touch and hearing. They can make quick escapes.

They breed year-round in warm environments. They grow fast.

They enter areas where humans are present for food and accommodation.

What are the Risks to You from Roof Rats?

Health Risks:

Leptospirosis,
Salmonella,
Plague,
Rat-bite Fever,
Lymphocytic Choriomeningitis Virus (LCMV),
Allergens,
Food Contamination,
Structural Damage,
Infestation and Hygiene Issues,
Psychological Impact,

How Can You Prevent Roof Rats?

Openings accessible to the area should be covered with products such as steel wool, cement mixed with glass shards, putty, etc.

Ventilation hatches should be covered with metal gratings.

Skirting boards under the door should be covered with insulation materials.

Food residues should not be left and should be kept clean.

Water sources should be dried.

Pet food should not be left outside the building.

There should be no clutter in areas such as warehouses. Floor and wall bottoms should be stacked visibly.

The floor parts of drywall walls that are connected to the outdoors should be covered with metal or ceramic tiles.

Close openings around the installation.

Regular traps should be set and monitored at entry points.

Make sure that outdoor vegetation is short.