Roof Rat
Rattus rattus
RodentsSleek rodent, 6-8 inches long with a tail longer than body. Black to gray fur with large ears and eyes. Excellent climber, prefers upper areas of buildings, attics, and trees. Also called black rat or ship rat.
Control Methods
Recommended methods for controlling this pest
| Method | Type | Effectiveness | Requirements |
|---|---|---|---|
| Snap Trap Placement for Rodents | Mechanical | None | |
| Tamper-Resistant Bait Station Deployment | Chemical | Required | |
| Rodent Exclusion for Vents and Weep Holes | Mechanical | None | |
| Tree Trimming for Pest Exclusion | Cultural | None | |
| Rodent Tracking Powder Application | Chemical | Required | |
| Advanced Rodent Proofing | Mechanical | None |
Common Harborage Locations
Where to find this pest during inspections
| Location | Why Found There | Priority |
|---|---|---|
| Wall Voids | Protected from disturbance, temperature controlled, provides nesting material and travel routes throughout structure. | High |
| Attics | Warmth in winter, nesting materials (insulation), minimal disturbance, entry from roof penetrations. | High |
| Outdoor Dumpsters | Massive food source, warmth from decomposition, moisture, protection from elements. | Critical |
| Drop Ceilings | Undisturbed environment, warmth from lighting, provides routes between rooms. | Medium |
| Tree Branches Touching Roof | Direct highway into structure, protection during travel, access to attic spaces. | High |
| Soffit Vents | Direct entry to attic, often screened inadequately, warmth escapes through vents. | Medium |
| Gutters | Standing water from clogs, organic debris accumulation, mosquito breeding site. | High |
Important Disclaimer: The information provided in this knowledge base is for educational and reference purposes only. Pest management professionals should always consult current product labels, Safety Data Sheets (SDS), manufacturer instructions, and applicable local, state, and federal regulations as the definitive source of truth. Product formulations, application methods, safety requirements, and regulations may change over time. This information may be out of date and should not replace professional judgment, proper training, or required licensing and certifications.