How can I get rid of mice hiding behind drywall in a house? - briefly
Seal all cracks and gaps in the wall, place snap traps or bait stations directly into the cavity, and consider ultrasonic repellents for added deterrence. Eliminate food and water sources, monitor traps regularly, and re‑inspect the drywall for new openings.
How can I get rid of mice hiding behind drywall in a house? - in detail
Rodents that have taken refuge in wall cavities can be removed by following a systematic approach.
First, locate active nests. Look for fresh droppings, gnaw marks, shredded insulation, or faint sounds of movement. Use a flashlight to inspect any accessible gaps in the drywall and listen for scratching at night.
Next, eliminate all possible entry points. Seal cracks, gaps around pipes, vents, and electrical boxes with steel wool, copper mesh, or silicone‑based sealant. Install metal flashing over larger openings to prevent re‑entry.
Set traps directly in the wall voids or in adjacent rooms. Recommended devices include:
- Snap traps with rodent‑grade bait (peanut butter, dried fruit, or meat).
- Electronic traps that deliver a quick, humane kill.
- Multi‑catch traps for monitoring activity.
Place bait stations in sealed containers if using poison, ensuring they are out of reach of children and pets. Follow local regulations for rodenticide use and label instructions precisely.
Apply repellents sparingly. Ultrasonic devices emit frequencies that deter rodents but should be positioned near the affected walls. Natural deterrents such as peppermint oil can be applied to cotton balls and placed in corners, though effectiveness is limited.
If infestation persists after sealing, trapping, and repellent measures, engage a licensed pest‑control professional. They can perform targeted fumigation, install wall‑mounted bait stations, and provide a comprehensive exclusion plan.
Finally, clean the area thoroughly. Remove all droppings with a disinfectant solution (1 part bleach to 10 parts water), wear gloves and a mask, and dispose of contaminated materials in sealed bags. Replace damaged insulation and repair any compromised drywall to restore structural integrity.
Regular maintenance—periodic inspection of exterior walls, proper storage of food, and prompt repair of leaks—prevents future incursions. By combining exclusion, trapping, and sanitation, the hidden rodent problem can be eradicated effectively.