Droppings Carry Germs That Spread When They Are Disturbed
Southwestern Public Health warns against sweeping or vacuuming rodent droppings, since both actions lift germs into the air you breathe. Hantavirus, salmonella and leptospirosis are all linked to mice. Roundworm eggs in raccoon waste can outlast ordinary household disinfectants, and bat guano can hold the fungus that causes histoplasmosis.
So before any of it is disturbed, the insulation removal crew dampens or treats it, puts on respirators and makes sure the exhaust and the full bags are outdoors. The droppings go into the bags with the insulation, not into the air in your home.
Mice Find Rural Attics When The Fields Are Cleared
Farmhouses and rural homes near Otterville, Springford and Langton see mice move in every fall once the crops come off. A few mice over a few winters can leave droppings through most of an attic. Squirrels and raccoons tend to stay near the eaves and the roof vents where they got in.
The signs are easy to spot once you know them. Mouse droppings look like dark grains of rice, and tunnels run through the top of the insulation like paths in snow. A sour smell near the hatch on a warm day is another clue, and so is scratching in the ceiling at night.
Sanitizing And Deodorizing Follow Insulation Removal
Once the soiled insulation is out, we pick up the nesting and loose droppings by hand. The joists, the roof boards and the top plates are then sprayed with a sanitizer and a deodorizer. That treats the wood the animals were living on, which is where most of the lingering smell comes from.
An attic that smelled of mice before will not smell of it after. New insulation should never be blown over droppings, and we will not do it.
Entry Holes Should Be Closed Before New Insulation Goes In
Trapping animals and wildlife-proofing a house are outside our work. Instead, each opening we notice is photographed and flagged, and we line up a wildlife or pest company to shut those gaps before new insulation is blown in. Otherwise the next family of mice moves into the fresh layer. Common entry points are gaps at the soffits, loose roof vents, the space around a chimney and holes where wires or pipes enter the house. The attic insulation replacement page covers the re-insulation step.