How should walls be treated against mice? - briefly
Inspect all interior and exterior wall cavities for openings larger than ¼ inch and seal them with steel wool, copper mesh, or expanding polyurethane foam; then apply a rodent‑resistant barrier such as cement‑based plaster or metal flashing. Conduct regular inspections to verify that seals remain intact and repair any new gaps promptly.
How should walls be treated against mice? - in detail
Walls must be inspected for entry points before any treatment. Look for holes larger than a quarter‑inch, gaps around pipes, vents, and baseboards. Use a flashlight to trace the perimeter from floor to ceiling, noting any cracks, damaged drywall, or loose siding.
Seal all openings with appropriate materials. For small gaps, apply steel wool followed by caulk; for larger holes, install copper mesh or hardware cloth and cover with plaster or expanding foam. Replace deteriorated insulation that provides nesting material, and install metal flashing around utility penetrations.
Apply a rodent‑resistant coating to the interior surface. Choose a non‑toxic, bitter‑tasting sealant that discourages gnawing. Apply in a thin, continuous layer over seams, corners, and any repaired areas, allowing full cure before painting.
Install physical barriers where sealing is impractical. Fit metal or hard‑plastic strips along baseboards and door thresholds; these prevent gnawing and make climbing difficult. Ensure that any installed barriers are anchored securely to studs.
Integrate monitoring and control measures. Place snap traps or electronic devices along known travel routes, preferably near walls where mice travel. Check traps daily and dispose of captured rodents promptly. Use scent‑based repellents sparingly, as they provide only temporary deterrence.
Maintain the treated environment. Keep the area free of food debris, store pantry items in sealed containers, and manage waste promptly. Conduct quarterly inspections to verify that seals remain intact and to address any new damage.
By combining thorough inspection, durable sealing, resistant coatings, physical barriers, and ongoing monitoring, walls can be effectively protected from mouse intrusion.