What should be done if mice are in the subfloor? - briefly
First, locate and seal every opening that permits rodents to enter the subfloor. Then, set appropriate traps or bait stations, and if the problem persists, hire a licensed pest‑control professional to eradicate the mice and prevent future incursions.
What should be done if mice are in the subfloor? - in detail
Mice nesting beneath flooring create health risks, structural damage, and contamination. Immediate action should follow a systematic approach.
First, confirm activity. Look for droppings, gnaw marks, shredded insulation, and audible scurrying. Use a flashlight to inspect accessible crawl spaces and the underside of floorboards. Document locations to target treatment.
Second, eliminate food and water sources. Seal all food containers, repair leaking pipes, and clear crumbs from the kitchen and pantry. Remove pet food after each meal and store it in metal containers.
Third, block entry points. Examine the building envelope for gaps around utility penetrations, foundation cracks, and ventilation openings. Apply steel wool, copper mesh, or expanding foam to small holes; use cement or metal flashing for larger breaches. Install door sweeps and weather stripping on exterior doors.
Fourth, set up control measures. Deploy snap traps or electronic kill traps in identified hotspots, positioning them perpendicular to walls where mice travel. Use bait such as peanut butter or dried fruit. Replace traps regularly and dispose of captured rodents according to local regulations. If live capture is preferred, use humane cage traps, then release animals at least 2 miles from the property.
Fifth, consider bait stations. Place rodenticide baits in tamper‑resistant stations, securing them out of reach of children and pets. Follow label instructions for dosage and placement, typically along walls and behind appliances. Monitor stations daily and replenish as needed.
Sixth, sanitize the area. After removal, clean surfaces with a disinfectant solution containing at least 0.1 % sodium hypochlorite. Remove contaminated insulation and replace it if it shows signs of chewing or staining. Vacuum crevices to capture residual droppings and urine, then wash hands thoroughly.
Seventh, schedule ongoing inspection. Conduct monthly checks for new signs of activity, especially after seasonal changes. Maintain a sealed perimeter and keep food storage practices consistent to prevent re‑infestation.
If the infestation persists despite these measures, enlist a licensed pest‑control professional. They can perform a comprehensive assessment, apply targeted baits, and recommend structural repairs to ensure long‑term exclusion.