How do rodents get into commercial buildings?

What entry points do rodents use to get into commercial buildings?

Rodents don't need much space to get inside. A mouse can squeeze through a gap as small as a quarter of an inch, a brown rat can get through an opening about the size of a quarter, and roof rats are skilled climbers that can access upper floors and roof spaces 

In a commercial building with dozens of potential entry points, that's a significant challenge. Common entry points in commercial buildings include:

• Gaps around utility lines: Pipes, electrical conduits, and HVAC lines that pass through exterior walls often leave small gaps that rodents can exploit.
• Loading docks and delivery areas: Doors that are left open during deliveries, or dock seals that have worn down, are among the most common entry points in warehouses and food facilities.
• Damaged or missing vent covers: Roof vents, crawl space vents, and floor drains without proper covers can all provide access.
• Cracks in the foundation: Even hairline cracks can widen over time and give rodents a way in, particularly at ground level.
• Gaps around doors and windows: Worn door sweeps, damaged frames, and poorly fitted windows are easy targets.
• Vegetation and landscaping: Overgrown shrubs, ivy, and trees close to the building give rodents cover and a pathway to upper floors and roof access points.

Given the multiple potential entry points, an integrated pest management program is essential for effective rodent control. Alongside removing attractants, physical exclusion with professional rodent-proofing is key to keeping rodents out of your operation.