What should you do if a mouse has gotten into a wall?

What should you do if a mouse has gotten into a wall? - briefly

Identify the mouse’s entry point, install appropriate traps inside the cavity, and seal all openings with steel wool and caulk. If the problem continues, engage a licensed pest‑control professional to eliminate the rodent and repair any damage.

What should you do if a mouse has gotten into a wall? - in detail

When a rodent finds its way into a wall cavity, immediate action prevents damage and health risks. First, locate the entry point. Inspect exterior walls, foundation cracks, gaps around utility penetrations, and vents. Seal any openings with steel wool, caulk, or metal flashing, ensuring the material is resistant to chewing.

Next, set up a control method inside the wall. Options include:

  • Snap traps: Place a few in accessible wall voids, baited with peanut butter or dried fruit. Position traps perpendicular to the suspected travel path.
  • Live traps: Use if humane capture is preferred; check traps frequently and release the animal far from the property.
  • Electronic traps: Offer quick, painless kill and can be left unattended for short periods.

If the wall is inaccessible, consider deploying a bait station at the nearest interior opening, such as a vent cover or baseboard gap. Use tamper‑proof stations to protect children and pets.

After capture, remove the mouse promptly, disinfect the area with a 1 % bleach solution, and allow the wall to dry. Replace any damaged insulation or wiring. Finally, conduct a thorough inspection of the building envelope to identify and repair structural vulnerabilities that could allow future intrusions. Regular maintenance—clearing debris, trimming vegetation, and sealing cracks—maintains a barrier against further infestations.