What should I do if a mouse has appeared on the balcony? - briefly
Eliminate any attractants for the «mouse», seal openings with steel wool or caulk, and set a humane trap. After capture, relocate the animal at a safe distance and regularly inspect the balcony for new activity.
What should I do if a mouse has appeared on the balcony? - in detail
A mouse on a balcony indicates a breach in the building’s exterior protection and a potential source of food and shelter. Immediate actions reduce the risk of infestation and prevent damage.
Inspect the area. Identify entry points such as gaps around windows, doors, vents, or utility lines. Look for gnaw marks, droppings, or nesting material.
Secure entry points. Apply steel‑wool or copper mesh to fill holes larger than a few millimetres. Use silicone sealant around frames and edges. Install weather‑stripping on doors that open onto the balcony.
Remove attractants. Store food in airtight containers. Clean crumbs and spills promptly. Keep trash bins sealed and away from the balcony edge.
Set traps. Choose snap traps or live‑capture cages placed along walls, behind planters, and near discovered activity. Bait with peanut butter, oats, or dried fruit. Check traps daily and dispose of captured rodents according to local regulations.
Apply deterrents. Sprinkle peppermint oil or place ultrasonic repellent devices on the balcony. Maintain a clutter‑free environment to eliminate hiding places.
Monitor continuously. Conduct weekly visual checks for new signs of activity. Re‑seal any fresh gaps that appear after weather changes or building maintenance.
If activity persists despite these measures, contact a licensed pest‑control professional for inspection and targeted treatment.