Bat Guano Cleanup & Removal
When bats leave, their guano stays. A colony that’s lived in an attic or wall for a few seasons can leave a lot of droppings behind. It soaks into insulation, stains drywall, smells strong in hot weather, and can harbor the fungus that causes histoplasmosis. Precision Wildlife Removal safely removes bat guano and contaminated material, sanitizes the area, and makes sure the bats can’t return. Call (888) 346-8228 for a free inspection.
- Open 24/7
- Calls answered by a real person
- Free inspection
- 5-year warranty
- 100% humane, no poison
- Family-owned since 1979
Why bat guano needs professional cleanup
- Health risk. Bat droppings can contain Histoplasma, a fungus whose spores become airborne when dry guano is disturbed. Breathing them in can cause histoplasmosis, a lung infection. Sweeping or vacuuming guano with a household vacuum spreads those spores.
- Odor. Guano and urine have a strong ammonia smell that gets worse in summer and can seep into living spaces.
- Damage. Accumulated guano adds weight, soaks insulation, stains ceilings and can rot wood over time.
- It attracts insects and can draw other bats back to the same roost.
Signs of a guano problem
- Piles of small, dark droppings in the attic, especially under the roof peak or near vents.
- Droppings stuck to siding, windows or the ground below an entry point.
- A strong musty or ammonia smell in upstairs rooms or the attic.
- Brown staining on ceilings or walls.
Bat guano looks like mouse droppings but crumbles into a shiny powder when crushed, because it’s full of insect parts. If you’re not sure, we’ll identify it during the inspection.
Our bat guano cleanup process
1. Exclude the bats first
Cleanup comes after the bats are gone. Otherwise new guano starts piling up right away. Our bat removal service handles humane exclusion, timed around Michigan’s maternity season (generally May through mid-August), when exclusion should be avoided.
2. Protect the work area and the crew
Technicians wear respirators and protective suits, and we contain the work area to keep dust out of your living space.
3. Remove guano and contaminated insulation
We remove droppings and any insulation contaminated with guano and urine.
4. Sanitize and deodorize
We treat the affected surfaces to reduce odor and the scent that draws bats back.
5. Restore
If insulation was removed, we replace it. See attic restoration and cleanup for the full process.
Guano in walls and soffits
Bats don’t always roost in the open attic. They also use wall voids, soffits and the space behind siding or chimney chases. Guano in a wall is harder to reach, and we’ll explain the options after the inspection.
Bat guano cleanup near you
We clean up after bats across Southeast and mid-Michigan from our Fraser, Howell and Bay City offices.
Bat guano cleanup FAQs
Can I clean up bat guano myself?
We don’t recommend it. Disturbing dry guano can release fungal spores, and a regular dust mask won’t protect you. The bats also need to be properly excluded first.
Does homeowners insurance cover guano cleanup?
Some policies do, and many don’t. We can provide photos and documentation of the damage for your claim.
How long does guano cleanup take?
It depends on how long the bats were there and how much material needs to come out. You’ll get a timeline with your free estimate.
How much does it cost?
It depends on the size of the area and whether insulation is replaced.
Get rid of bat guano safely
Call (888) 346-8228, or request a free inspection.
Related services: Bat removal · Attic restoration · Wildlife exclusion