How can I get rid of mice on a suspended ceiling? - briefly
Seal all openings around the ceiling, install snap traps or bait stations directly beneath the affected area, and monitor regularly to confirm removal. Consider using ultrasonic repellents as an additional, non‑lethal deterrent.
How can I get rid of mice on a suspended ceiling? - in detail
Inspect the cavity thoroughly. Locate holes, gaps around ducts, light fixtures, and pipe penetrations. Use a flashlight and a mirror or a flexible inspection camera to see hidden areas. Mark each opening with tape.
Seal all identified entry points. Apply steel wool or copper mesh to small cracks, then cover with expanding polyurethane foam or cement. For larger openings, install metal flashing or hardware cloth secured with screws. Ensure the sealant is durable and resistant to chewing.
Choose a control method suited to the environment.
- Snap traps: place at least three traps per identified pathway, positioned perpendicular to the wall with the trigger end facing the wall. Bait with peanut butter, dried fruit, or small pieces of cheese. Check daily and dispose of captured rodents promptly.
- Live‑catch traps: set in the same manner as snap traps, using the same bait. Release captured mice at least 150 m from the building, following local regulations.
- Bait stations: use tamper‑proof stations containing anticoagulant rodenticide. Position at least one station per 50 ft of ceiling run, away from high‑traffic areas and inaccessible to non‑target animals. Follow label instructions for placement and safety.
- Ultrasonic emitters: install devices inside the cavity, spaced no more than 30 ft apart. Verify that the units cover the entire area and replace batteries as required.
Maintain cleanliness to deter reinfestation. Remove food sources by sealing waste bins, cleaning crumbs, and storing dry goods in metal containers. Vacuum the suspended ceiling grid periodically to eliminate droppings and nesting material.
Monitor activity for several weeks. Replace or reposition traps if captures cease, indicating possible new entry points. Keep a log of locations, dates, and results.
If the infestation persists despite these measures, engage a licensed pest‑control professional. They can conduct a comprehensive assessment, apply targeted baiting, and provide recommendations for long‑term exclusion.