What should be done if a mouse is scratching at the wall at home? - briefly
Locate and seal all openings in walls, floors, and foundations that could admit the rodent, then set appropriate traps (snap or humane) near the activity area and check them regularly until no further signs appear. If the problem persists, consider contacting a professional pest‑control service for comprehensive removal and prevention.
What should be done if a mouse is scratching at the wall at home? - in detail
If a rodent is making scratching noises against interior walls, immediate action is required to prevent damage, disease risk, and escalation of the infestation.
First, confirm the presence of the animal. Look for fresh droppings, gnaw marks, shredded insulation, or entry holes near the source of the sound. Use a flashlight to inspect baseboards, behind furniture, and any visible gaps.
Next, seal all potential entry points. Apply steel wool or copper mesh to small openings, then cover with caulk or expanding foam. For larger gaps, install hardware cloth or metal flashing. Pay special attention to areas around pipes, vents, and utility lines.
After exclusion, set up trapping devices. Choose snap traps or live‑capture cages, positioning them perpendicular to the wall, with the trigger end facing the mouse’s travel path. Bait with high‑protein foods such as peanut butter, dried fruit, or small pieces of cheese. Check traps daily and dispose of captured rodents according to local health regulations.
If trapping does not reduce activity within 48–72 hours, consider using an approved rodenticide. Place bait stations in sealed containers, away from children and pets. Follow label instructions precisely, and monitor for signs of secondary poisoning.
Finally, conduct thorough sanitation. Remove food sources by storing pantry items in airtight containers, cleaning crumbs, and fixing leaks that provide water. Wash any contaminated surfaces with a disinfectant solution. Replace damaged insulation or drywall sections, and consider installing a permanent barrier, such as a metal mesh backing, behind vulnerable walls.
Regular inspection—monthly visual checks of entry points and signs of activity—will help maintain a rodent‑free environment. If the problem persists despite these measures, enlist a licensed pest‑control professional for a comprehensive assessment and targeted treatment.