From first whiff to finished
- Find where it is strongest upstairs.Note which floor registers, closets or corners smell worst. That points toward the right section of the crawl space.
- Look before entering.Shine a light through the access opening. If an animal is alive inside, back away and contact a licensed wildlife professional.
- Protect whoever goes in.Crawl spaces may hold droppings, raccoon latrines, sharp debris and old wiring. Gloves, a respirator, coveralls and eye protection are the minimum.
- Remove remains and affected soil.The carcass is bagged, and the top layer of stained soil or vapor barrier beneath it is removed.
- Treat and cover.The area is treated with an enzyme product, a new section of vapor barrier is laid if one existed, and ductwork in the space is checked for leaks.
Dirt floor versus covered floor
Bare soil crawl space
- Fluids soak straight into the ground
- Stained soil usually has to be dug out and bagged
- Moisture can prolong the smell
- A new vapor barrier is often a sensible add-on
Vapor barrier or concrete skim
- Fluids pool on the surface and are easier to remove
- The damaged barrier section can be cut out and replaced
- Concrete can be scrubbed and treated
- Less odor tends to linger once cleaned
Why older crawl spaces attract animals
Crawl spaces under prewar and postwar homes around the lake were built with simple screened vents, wood access doors and gaps where pipes and wires pass through the foundation. Decades later, screens have rusted, doors have warped and soil has settled away from the foundation, leaving openings that rats, skunks and raccoons use. Inside, the dark, sheltered space is warmer than outside in winter and cooler in summer.
A crawl space that has an animal problem once tends to have it again until the openings are fixed. After cleanup, screening vents with sturdy hardware cloth, fitting a tight access door and sealing pipe gaps are usually worth the cost.
Common questions
Can I just pour lime on the spot?
Lime or baking soda may dull the smell a little, but it does not break down the residue and can make later cleaning harder. Removing the affected soil and treating the area is more reliable.
Will the smell come through hardwood floors?
Yes. Older strip floors have small gaps and no sealed subfloor, so odor rises easily, especially when the heat runs.
General information for Sloan's Lake, not a quote or professional advice. In an emergency, call 911.