How can I catch a mouse under the floor in an apartment? - briefly
Place baited snap or humane traps in the gap between the subfloor and flooring, focusing on known runways and sealing all entry holes with steel wool or caulk. Inspect traps daily and refresh bait to maintain effectiveness.
How can I catch a mouse under the floor in an apartment? - in detail
Identifying the problem area is the first step. Look for fresh droppings, gnaw marks, or faint rustling sounds coming from the space between the subfloor and the finished floor. Use a flashlight to inspect any accessible gaps, such as those around baseboards, vent covers, or utility openings.
Next, choose a trapping method that works in concealed spaces. Effective options include:
- Snap traps with extended arms – place them against the subfloor edge where the mouse is likely to travel; attach a small piece of cheese or peanut butter as bait.
- Live‑catch cages – position them in a narrow tunnel created by inserting a piece of cardboard or thin wood to guide the rodent into the entrance.
- Glue boards – set them on the floor surface directly above the suspected route; cover with a thin layer of cardboard to prevent accidental contact with humans or pets.
Secure each trap with tape or a small weighted object to keep it from shifting when the floor vibrates. Replace bait daily to maintain attractiveness.
After trapping, seal entry points to prevent recurrence. Apply steel‑wool or copper mesh to cracks, then cover with caulk or expanding foam. Inspect utility penetrations (pipes, cables) and install metal flashing where gaps exist. For larger openings, consider installing a thin sheet of metal or a rubber gasket.
Finally, maintain a clean environment to discourage return. Store food in sealed containers, remove crumbs promptly, and dispose of garbage in tightly closed bins. Regularly vacuum under furniture and behind appliances to eliminate residual scent trails.
If the infestation persists despite these measures, consult a professional pest‑control service equipped to access hidden subfloor cavities without damaging the structure.