What should I do if a mouse is scratching under the floor? - briefly
Inspect the area to locate entry points, seal gaps with steel wool and caulk, and place snap or live‑catch traps along walls. If the issue continues, contact a professional pest‑control service.
What should I do if a mouse is scratching under the floor? - in detail
If you hear a rodent moving beneath the floorboards, start by confirming the activity. Listen for repeated scratching, squeaking, or scurrying sounds, especially at night. A visual inspection can help: look for droppings, gnaw marks, or small holes in the subfloor, baseboards, or walls.
Immediate actions
- Seal entry points. Use steel wool or copper mesh to block gaps around pipes, vents, and utility openings, then cover with caulk or expanding foam.
- Reduce food sources. Store pantry items in airtight containers, clean crumbs, and keep pet food sealed.
- Remove water. Fix leaks, dry damp areas, and avoid standing water in basements or crawl spaces.
Control measures
- Set traps: Snap traps or electronic devices placed along walls, near known pathways, are effective. Bait with peanut butter, chocolate, or dried fruit. Check traps daily and dispose of captured rodents according to local regulations.
- Deploy bait stations: If a larger infestation is suspected, use tamper‑proof stations with anticoagulant rodenticides, but follow label instructions and keep them out of reach of children and pets.
- Consider live‑catch traps only if you plan to release the animal far from the property; otherwise, lethal traps are more reliable for indoor use.
Inspection and repair
- After removal, re‑inspect the area. Look for damaged insulation, chewed wiring, or compromised structural elements. Replace any compromised sections of subfloor or insulation to prevent re‑entry.
- Install a barrier: A thin sheet of metal or hardware cloth can be placed beneath the flooring to block future access.
Preventive upkeep
- Maintain a clean environment: Regularly vacuum, sweep, and wipe down surfaces to eliminate crumbs.
- Conduct seasonal checks: Before winter, examine exterior walls, foundation cracks, and roof eaves for new openings.
- Use deterrents: Ultrasonic repellers or peppermint oil–infused cotton balls placed near potential entry points may discourage activity, though they should complement, not replace, physical barriers.
If the problem persists despite these steps, contact a licensed pest‑control professional. They can perform a comprehensive assessment, identify hidden nests, and apply industry‑standard treatments safely.