How to get rid of rats in ventilation? - briefly
Seal all openings in the ductwork and fit metal mesh or screens to prevent entry, then position baited snap traps or electronic kill devices inside the system. Clean and disinfect any contaminated sections regularly while monitoring traps for activity.
How to get rid of rats in ventilation? - in detail
Inspect the duct network thoroughly. Identify gaps around pipe penetrations, roof vents, and wall openings where rodents can enter. Seal each opening with stainless‑steel mesh, heavy‑duty foam, or cement‑based caulk; avoid materials that gnaw easily, such as rubber or soft plastic.
Deploy control measures inside the system. Place snap traps or electronic kill devices at strategic points—near bends, junctions, and access doors. Use bait that is resistant to moisture and does not attract non‑target species; common choices include peanut butter mixed with a small amount of dry cat food. Check traps daily, remove carcasses promptly, and reset with fresh bait.
Apply rodenticide responsibly if trapping proves insufficient. Distribute bait stations in external areas that lead to the ventilation intake, ensuring they are tamper‑proof and comply with local regulations. Monitor for signs of activity—droppings, gnaw marks, urine stains—and adjust placement as needed.
Conduct a deep cleaning of the ducts after removal. Use a high‑pressure vacuum equipped with HEPA filtration to extract nesting material, feces, and urine residues. Follow with a disinfectant approved for HVAC use; apply to interior surfaces and let dry completely before re‑pressurizing the system.
Establish a maintenance schedule. Inspect seals and traps quarterly, replace worn mesh, and verify that no new entry points have formed. Keep the surrounding area free of food sources and clutter that could attract rodents back to the building.
If infestation persists despite these actions, engage a licensed pest‑control professional. They can perform advanced techniques such as ultrasonic deterrents, exclusion of larger entry zones, and detailed forensic analysis of rodent activity patterns.