What should I do if mice have gotten into the space between drywall and the wall? - briefly
Seal entry points, set snap traps or live traps in the cavity, and contact a pest‑control professional to remove any remaining rodents and inspect for damage. Afterwards, repair drywall and apply rodent‑proof materials to prevent recurrence.
What should I do if mice have gotten into the space between drywall and the wall? - in detail
If rodents have entered the cavity behind drywall, begin by confirming activity. Look for droppings, gnaw marks, rustling sounds, or visible pathways. Use a flashlight and a small inspection camera if possible to locate nests and entry points.
Next, eliminate access. Seal cracks, gaps around pipes, electrical boxes, and baseboards with steel wool, copper mesh, and a durable caulk. Apply expanding foam to larger voids, ensuring the foam is rodent‑resistant. Repair any damaged drywall to prevent further intrusion.
Set up control measures. Place snap traps or electronic traps directly in the identified routes, spacing them 12–18 inches apart. Bait with peanut butter, chocolate, or dried fruit. Check traps daily, dispose of captured animals according to local regulations, and reset as needed.
After removal, sanitize the area. Wear gloves and a mask, then clean surfaces with a disinfectant containing bleach (1 part bleach to 10 parts water). Dispose of contaminated insulation or drywall sections that show signs of nesting.
Finally, implement long‑term prevention. Maintain a tidy environment, store food in sealed containers, and keep vegetation trimmed away from the building. Schedule periodic inspections of the wall cavity, especially after seasonal changes, to catch any new activity early.