A mouse ran into the house—what should I do? - briefly
Close all gaps in walls, floors, and doors, then set snap or live traps near observed activity and dispose of captured mice promptly. Eliminate food sources, store perishables in sealed containers, and monitor for further intrusion.
A mouse ran into the house—what should I do? - in detail
When a mouse appears inside a residence, immediate, systematic action prevents damage and health risks.
First, isolate the animal. Close doors to rooms where the mouse is not present, and turn off lights in those areas. Mice avoid bright environments, so darkness encourages it to stay in the illuminated space where it can be observed.
Second, identify entry points. Examine walls, floors, and foundations for gaps larger than ¼ inch. Common locations include behind appliances, around pipes, and beneath cabinets. Seal openings with steel wool, copper mesh, or expanding foam rated for rodents.
Third, choose a removal method. Options include:
- Live traps – spring‑loaded cages that capture without killing. Check traps every hour; release the mouse at least 100 feet from the property.
- Snap traps – wooden or plastic devices that kill instantly. Position perpendicular to walls, with the trigger end facing the mouse’s travel path.
- Electronic traps – deliver a high‑voltage shock. Require batteries and periodic cleaning.
Place traps along established runways: near walls, behind furniture, and close to suspected entry points. Bait with high‑protein foods such as peanut butter, sunflower seeds, or dried fruit.
Fourth, maintain sanitation. Remove food sources that attract rodents: store dry goods in sealed containers, clean crumbs from countertops, and empty garbage daily. Repair leaks, as moisture draws mice.
Fifth, monitor and repeat. Continue trapping for at least three days after the last capture to ensure no survivors remain. Re‑inspect sealed openings regularly; reinforce any that show wear.
If infestations persist despite these measures, consult a licensed pest‑control professional. They can apply rodenticides safely, conduct structural assessments, and implement long‑term exclusion strategies.