How can I get rid of mice behind drywall? - briefly
Seal all gaps and holes in the walls, install snap or electronic traps within the cavity, and apply rodent‑resistant barriers to block further entry. Verify removal and reinforce prevention with a professional inspection.
How can I get rid of mice behind drywall? - in detail
Mice concealed in wall cavities require a systematic approach that combines detection, access creation, removal, and prevention.
First, locate the activity. Listen for scratching or squeaking, look for droppings, gnaw marks, or shredded insulation near baseboards, vents, and electrical outlets. Use a flashlight to inspect any visible gaps in drywall or ceiling tiles.
Second, establish a safe entry point. Cut a small opening (about 2 × 2 inches) in the drywall at the nearest visible damage or create a removable panel near the suspected area. Keep the opening as small as possible to maintain structural integrity while allowing trap placement.
Third, select an appropriate removal method. Options include:
- Snap traps baited with peanut butter, chocolate, or dried fruit; place them directly against the interior side of the opening.
- Live‑catch traps positioned similarly; release captured rodents far from the property.
- Electronic traps that deliver a lethal shock; ensure they are rated for wall use.
If using poison, follow label instructions strictly, place bait in tamper‑proof stations, and keep the area inaccessible to children and pets.
Fourth, monitor traps daily. Replace baits and reset devices until no further captures occur for several consecutive days. After confirming the infestation is cleared, seal the access hole with new drywall or appropriate patching material. Apply fire‑rated joint compound and sand smooth for a seamless finish.
Finally, prevent re‑infestation by eliminating entry points throughout the building. Install steel wool or copper mesh in gaps around pipes, vents, and cable penetrations, then seal with caulk or expanding foam. Maintain a clean environment: store food in sealed containers, promptly clean crumbs, and manage garbage in tightly closed bins. Regularly inspect exterior foundations, siding, and roof eaves for cracks or openings, and repair them with cement, metal flashing, or hardware cloth.
When the problem persists despite these measures, consult a licensed pest‑control professional. They can perform infrared inspections, apply rodent‑specific baits, and ensure compliance with local health regulations.