Bat guano cleanup
Once the bats are gone, what they leave behind is the next problem. Bat droppings (guano) and urine soak into insulation and wood, smell, and can grow the fungus Histoplasma, whose spores cause the lung infection histoplasmosis when the dust is breathed in.
Light droppings in one corner can be handled carefully. A thick layer across an attic floor is a job for a crew with respirators, HEPA vacuums and sealed bags, and usually runs $500 to $8,000 depending on the area and how much insulation has to come out.
When cleanup needs a crew
- Droppings form a layer or piles rather than scattered pellets.
- Insulation under the roost is stained, wet or matted.
- There is a strong ammonia smell in the attic or upstairs.
- Stains are spreading through a ceiling or wall.
- Anyone in the household has a weakened immune system or lung condition.
- The roost has been used for several years.
Typical cleanup costs
| Job | Typical price |
|---|---|
| Guano cleanup Removal, HEPA vacuuming, disinfection and disposal | $500 to $8,000 |
| Attic restoration New insulation and repairs after cleanup | $2,500 to $5,000+ |
| Inspection Often credited against the work | $75 to $400 |
Ranges drawn from three national home-services cost guides, checked November 2026. US dollars. A guide, not a quote. See the bat removal cost guide.
How droppings are removed safely
Bats out first
Cleanup comes after exclusion and the final seal, or the colony simply soils the new insulation.
Respirators
For large accumulations NIOSH advises a powered air-purifying respirator or a full-face respirator with 100-series filters, worn the whole time (NIOSH). A dust mask is not enough.
Coveralls and covers
Disposable hooded coveralls, shoe covers and gloves, all bagged and sealed when the job is done.
Keep the dust down
Droppings are misted and removed with a HEPA-filtered vacuum, never swept or blown, and the household system is switched off.
Bag and dispose
Waste goes in heavy-duty bags straight to disposal. Check local rules for large volumes.
Treat and deodorize
Surfaces are treated with an enzyme cleaner or disinfectant to break down urine and remove the smell that draws bats back.
Droppings across the attic floor? Get the cleanup priced with the exclusion.
Get a quoteThe usual order
Exclude and seal
The colony is out and every gap is closed.
Contain
The attic hatch and vents are sealed off from the house; the HVAC is turned off.
Remove
Droppings and contaminated insulation are removed with HEPA vacuums and bagged.
Treat and restore
Surfaces are cleaned and deodorized, then new insulation is installed.
Before you book
Is bat guano dangerous?
It can be. Disturbing dry droppings can release Histoplasma spores. Most healthy people who breathe a few have no symptoms, but large exposures and people with weaker immune systems can get seriously ill.
Can I clean up bat droppings myself?
A few scattered pellets, yes, with gloves, a good respirator and a damp cloth or HEPA vacuum. A layer across the attic is safer left to a crew with proper equipment.
How do I tell bat droppings from mouse droppings?
Bat droppings crumble into a shiny powder of insect parts when pressed with a stick. Mouse droppings are harder and do not crumble. Do not do this barehanded.
Does insurance pay for bat guano cleanup?
Usually not; most policies treat animal damage as maintenance. A few cover sudden damage, so it is worth asking your insurer.
How long does guano cleanup take?
One day for a light job, two or three for a large attic with full insulation removal and replacement.
Get a quote for guano cleanup
Start with your ZIP code. Contact details come next, then a few taps about the bats.
We are an introduction service, not a bat removal specialist. We pick one who works near you, tell you their name, and share your request only once you agree.
Got it. Your request is with us.
- Before close of business tomorrow you will hear from us with the name of a bat specialist working near you.
- Say yes and your request goes to that firm; say no and it goes nowhere.
- They arrange an inspection and give you a price. Your email is used for this request only, never for newsletters.
If a bat was in a room where someone was asleep, keep it contained if it is safe to do so and call your local health department today.