What should I do if a mouse is scratching under the floor in an apartment building? - briefly
Inspect the unit for gaps, seal all openings, and set snap or live‑catch traps near the source of the noise while notifying the property manager to arrange professional extermination and repairs. Keep food in sealed containers and remove clutter to discourage further rodent activity.
What should I do if a mouse is scratching under the floor in an apartment building? - in detail
If you notice scratching noises coming from beneath the floorboards, first verify that a rodent is present by listening for repeated activity, droppings, or gnaw marks. Confirming the source prevents unnecessary measures.
Eliminate food attractants. Store all edibles in sealed containers, clean crumbs immediately, and avoid leaving pet food out overnight. Dispose of trash in containers with tight‑fitting lids and remove it from the unit regularly.
Inspect the apartment for entry points. Examine the perimeter of the floor, walls, and baseboards for gaps larger than ¼ inch, holes around pipes, or damaged vent covers. Use a flashlight and a thin piece of cardboard to probe suspicious openings. Seal any openings with steel wool, caulk, or expanding foam, as these materials resist chewing.
Set traps and baits strategically. Place snap traps or electronic traps along walls, behind furniture, and near identified entryways. Bait with a small amount of peanut butter, chocolate, or dried fruit. For baits, use tamper‑resistant stations and follow label instructions to avoid accidental exposure to children or pets. Check traps daily, dispose of captured rodents promptly, and reset traps until activity ceases.
Contact a licensed pest‑control professional if trapping does not reduce activity within a week, if the infestation appears extensive, or if you are uncertain about safe bait placement. Provide the service provider with documentation of observed signs, such as photos of droppings or gnaw marks, to facilitate targeted treatment.
Coordinate with building management to address structural issues that may allow rodents to move between units. Request regular inspections of common areas, maintenance of exterior walls, and prompt repair of any cracks or damaged screens. Implement a long‑term prevention plan that includes periodic sealing of potential entry points and routine sanitation practices.