Pest Prevention: Exterior Cracks, Crevices, Gaps & Openings
- Insect and rodent pests can gain entry to a facility through any number of cracks, gaps, and openings on the exterior. Sealing these access points prevents pests from harboring inside wall voids.
- Having door sweeps on the bottom of all exterior doors prevents rodent and insect pests from entering through any gaps. Verify all vents, windows, and door screens are in good condition to prevent flying insects from entering the building.
- Inspect carefully along the areas where the building foundation and roofline meet the structure. These are common areas for gaps, cracks, and crevices. They should be properly sealed to prevent insect and rodent entry. Pay attention to any place where pipes enter or leave a building. There are frequently gaps left around these where rodents and insects can easily enter the structure.
- Ensure air intake systems have filters installed to prevent small flying insects from being introduced. Cover vents from attic spaces, plumbing, and laundry facilities with screening to prevent insects and rodents from gaining entry at these points.
- Verify eaves and roof overhangs are sealed properly. Insect and rodent pests can gain access to structures just as easily at higher building points as they can at those near the ground.
- Materials used for sealing gaps, cracks, crevices, and holes should be durable and pest-deterrent. Some recommended materials that are easy to use include silicone caulk, copper mesh, stainless steel mesh, and expandable foam.
