When droppings become a cleanup project
A few droppings under a sink are a common household problem. A cleanup project begins when rodents have been active for a while: droppings spread across attic insulation, nests in wall cavities or crawlspaces, urine staining on ceilings, or contamination in pantries, basements, restaurants, hotels or warehouses. Homeowners and landlords with rental units call most often.
At that scale, the risk from disturbing the material rises, and so does the amount that has to be removed and disinfected. Insulation that has been used as a nest also loses much of its value as insulation, which is another reason owners choose to remove it.
Why sweeping and vacuuming are off the table
CDC notes that stirring up fresh rodent urine, droppings or nesting material can release hantavirus into the air. For that reason, CDC advises against sweeping or vacuuming droppings. Instead, the space should be aired out first and the droppings soaked with an EPA-registered disinfectant or a bleach solution before they are wiped up.
For heavy infestations, CDC lists additional protection such as coveralls, goggles and a HEPA-filter respirator. That is the level of protection our crew uses in attics and crawlspaces.
Disinfectant contact time matters as well. CDC's guidance calls for letting the solution soak for its recommended time, or as long as the product label directs, and we follow the label of whatever registered product we use.
Our rodent cleanup sequence
- Inspection We locate droppings, nests, urine staining and likely entry points, and confirm pest control is under way.
- Ventilate and suit up The space is aired out where possible, and the crew puts on respirators, coveralls, gloves and eye protection.
- Soak and remove Droppings and nests are wetted with disinfectant, left to soak per the product label, and removed with disposable materials.
- Insulation removal Contaminated attic or crawlspace insulation is removed with HEPA-filtered equipment and bagged.
- Disinfect surfaces Exposed framing, sheathing, floors, shelves and cabinets are cleaned and then disinfected.
- Notes for prevention We record entry points and damage we observed so your pest control company and contractors can follow up.
Common places we clean
- Attic insulation and rafters
- Crawlspace vapor barriers and floor joists
- Kitchen cabinets, pantries and behind appliances
- Garages, sheds and storage rooms
- Restaurant storage areas and warehouse racking
- Vehicles and RVs that sat unused
A note on vehicles
Rodents often nest in vehicles that sit for a season. For cars and RVs, CDC advises airing the vehicle out before cleaning and not vacuuming until surfaces have been disinfected. If rodents have nested in the vehicle's air ducts, CDC suggests professional pest control. Our car biohazard cleanup page covers vehicle interiors.
If you have found droppings
- Do not sweep, vacuum or use a leaf blower on droppings.
- Keep children and pets away from the area.
- Avoid running a whole-house fan or HVAC system if droppings are near returns.
- Call a pest control company to deal with the rodents themselves.
- Store food in sealed containers until the cleanup is complete.
Who handles the rest
Trapping, baiting and sealing entry points belong to a pest control company holding a Tennessee Department of Agriculture charter. Chewed wiring needs an electrician, and rodent activity in ductwork usually calls for an HVAC contractor. We remove contaminated insulation; whether we reinstall it or refer it to an insulation contractor is something we settle in the scope.
If rodents are part of a larger cluttered home, see hoarding with pest infestation. Businesses that handle food should also check with their own health inspector about any steps required after an infestation.