What to do if mice are scratching under the floor? - briefly
Locate and seal all entry gaps, then deploy snap traps or bait stations to capture the rodents; if activity continues, enlist a licensed pest‑control service.
What to do if mice are scratching under the floor? - in detail
If you detect scratching noises coming from beneath the subfloor, immediate action is required to prevent infestation and structural damage.
First, confirm the source. Remove a floorboard or access panel in the affected area and look for droppings, gnaw marks, or live rodents. Use a flashlight and a disposable glove to avoid contamination.
Next, eliminate entry points. Inspect the foundation, walls, and utilities for gaps larger than ¼ inch. Seal cracks with steel wool, expanding foam, or concrete patch, and install metal flashing around pipes and vents. Ensure doors and windows have tight-fitting sweeps.
Implement control measures:
- Traps – Place snap traps or electronic traps along walls, behind appliances, and near suspected pathways. Bait with peanut butter, chocolate, or dried fruit. Check traps daily and dispose of captured rodents according to local regulations.
- Bait stations – If the infestation is extensive, use tamper‑resistant bait stations containing anticoagulant rodenticides. Follow label instructions and keep stations out of reach of children and pets.
- Repellents – Apply ultrasonic devices or natural repellents (e.g., peppermint oil) as supplementary deterrents, recognizing that efficacy varies.
Maintain a hostile environment by removing food and shelter:
- Store all food in sealed containers.
- Keep countertops and floors clean of crumbs.
- Reduce clutter, especially cardboard and fabric piles.
- Repair water leaks and improve ventilation to discourage nesting.
Monitor progress for at least two weeks. If activity persists, consider structural inspection for hidden burrows or damage and engage a licensed pest‑control professional. Professional services can offer comprehensive sealing, advanced baiting, and post‑treatment verification.
Finally, schedule regular inspections, especially after seasonal changes, to detect early signs of rodent activity and prevent recurrence.