Animal Removal from Chimney
Why this matters
Wildlife in chimneys is a common service call: birds, raccoons, squirrels, bats, and others find chimneys attractive habitat. Some are stuck (can't climb out); some are nesting; some have died inside. Each situation has different removal requirements + legal considerations. Some species are protected under federal or state law.
Common chimney wildlife
| Animal | Common situations |
|---|---|
| Chimney swift | Federally protected migratory bird; nests in chimneys |
| Squirrel | Falls in; can't climb out; sometimes nesting |
| Raccoon | Nesting; raises young in chimney |
| Bat | Roost colonies |
| Bird (various) | Nesting (some protected) |
| Snake | Rare but happens |
| Dead animals | Various species die inside |
Each animal has specific removal protocols.
Legal considerations
Federal law:
| Law | Protection |
|---|---|
| Migratory Bird Treaty Act (MBTA) | Most native bird species; including nests + eggs |
| Endangered Species Act | Specific species |
| State wildlife laws | Vary by state |
Removal of protected species requires:
- Permit (often)
- Specific timing (some species)
- Specific methods
- Sometimes wildlife rehabber involvement
A chimney sweep should know basic legal limits; refer to wildlife specialists for complex cases.
Chimney swift specifically
Chimney swifts are federally protected migratory birds:
- Nest in chimneys May-August
- Removal of swifts or nest during nesting is illegal
- Eggs + young are protected
- Wait for migration south (typically September)
- After migration: chimney can be capped
Customer's chimney with active swift nest:
- Inform the customer of the protection
- Educate on the swifts (they're declining; help is important)
- Wait until swifts leave
- After migration: install chimney cap
- Customer's future use of fireplace blocked during summer nesting
This is the legal answer. Removal is a federal violation.
Raccoons
Raccoons in chimneys (typically female with young):
- Verify it's a mother with young (most common situation)
- Wait for the young to be mobile (3-4 weeks typically)
- Use one-way exclusion door at the top
- Mother exits to hunt; can't return
- Take down the exclusion after confirmation
- Cap the chimney
OR:
- If urgent: humane trapping
- Coordinate with wildlife rehabilitator OR licensed wildlife control operator
- Some areas require professional wildlife trappers (specific licensing)
- The mother + young are typically released together (or moved to rehab if young)
Raccoon mothers will be aggressive defending young; this isn't DIY safe.
Squirrels
Squirrels in chimneys (typically fell in; can't climb out):
- Provide an escape rope (rope inside the chimney; squirrel climbs out)
- OR humanely remove (live trap)
- Cap the chimney after
Squirrels typically aren't nesting; they're stuck. Easier removal than other situations.
Birds (other than swifts)
For non-swift birds:
- Identify the species (some protected, others not)
- For protected: similar to swift handling
- For non-protected: removal possible per local law
- Always educate the customer + cap the chimney
Bats
Bat colonies:
- Some species federally protected
- Indiana bat, gray bat, others
- White-nose syndrome has decimated populations
- Maternal colonies cannot be disturbed during pups
- Wait for fall (after young are flying)
Bat removal:
- Identify the species
- Verify it's not a protected species or check timing
- One-way exclusion at the entry
- Wait period (1-2 weeks typically)
- Cap the chimney after
If protected species OR uncertain: refer to a wildlife specialist.
Dead animal removal
For animals that have died in the chimney:
- Locate the carcass (visual + smell often confirms)
- Approach from the appropriate end (top or bottom)
- Use grabbers + heavy gloves
- Remove + bag the carcass
- Disinfect the area
- Clean any blood / fluids
- Cap the chimney to prevent recurrence
Wear:
- Heavy gloves
- Eye protection
- N95 mask (for safety against pathogens)
- Disposable coveralls (some situations)
The customer's chimney is essentially contaminated; clean thoroughly.
Disease considerations
Wildlife can carry:
| Disease | Animals |
|---|---|
| Rabies | Mammals; serious bite risk |
| Histoplasmosis | Bat or bird droppings (fungal infection from spores) |
| Salmonella | Various |
| Hantavirus | Rodent droppings |
| Parasites (fleas, ticks, mites) | All wildlife |
Take precautions:
- PPE (gloves, mask, eye protection)
- Wash hands + face after work
- Disinfect tools
- Consider professional cleaning for severe situations
Wildlife exclusion (after removal)
After removing the animal:
- Inspect the chimney:
- Damaged interior?
- Damaged cap (if present)?
- Damaged crown?
- Any other entry points
- Cap the chimney with appropriate cap:
- Animal-resistant design
- Spark arrestor + animal screening
- Properly secured
- Sized for the flue
- Repair any damage caused by the animal
- Verify the chimney's other entry points are sealed
A properly-installed cap is the long-term prevention.
Chimney cap selection
For animal-resistant caps:
| Feature | Notes |
|---|---|
| Mesh screen | 3/8 to 1/2 inch openings per IRC R1003.9.1; finer mesh blocks with creosote |
| Heavy construction | Resists raccoons, squirrels |
| Properly fitted | No gaps |
| UL-listed if applicable | Standard for stove vents |
| Materials | Galvanized steel + stainless |
Sized for the flue + appropriate for the climate.
Pricing the work
Wildlife removal varies:
| Situation | Effort |
|---|---|
| Stuck squirrel | Minimal; rope rescue |
| Dead animal removal | Moderate; cleanup |
| Raccoon family | Significant; multiple visits |
| Bat colony | Significant; exclusion |
| Protected species | Wait period + exclusion |
| Cap installation | Standard |
Quote based on the situation. The customer + situation determine.
When to refer to wildlife control
Refer for:
- Aggressive animals (rabid behavior)
- Multiple animals
- Protected species requiring permits
- Damage to the home beyond chimney
- Situations involving young / nesting
Specialty wildlife control operators have:
- Specific licensing
- Proper trapping equipment
- Relationships with rehabilitators
- Knowledge of state law
Documentation
For each wildlife job:
- Customer's identification + property
- Animal identification (species)
- Removal method
- Disposition (released, deceased, transferred to wildlife specialist)
- Cleanup performed
- Cap installed
- Customer file note
Customer education
For wildlife customers:
- "Capping the chimney prevents future wildlife"
- "Annual chimney inspection catches wildlife early"
- "Don't try to remove wildlife yourself; bite + disease risk"
- "If you hear sounds in the chimney, call us"
After-work considerations
For severe contamination:
Heavy accumulations of bird or bat droppings are a respiratory hazard, not just a mess. Dried droppings aerosolize the moment you disturb them, and the fungal spores they can carry cause serious lung infection. Treat this as PPE-first work every time.
- Respirator before anything else. A fitted N95 is the floor; a half-face with P100 cartridges is the right call in a confined flue with heavy accumulation. Add eye protection, gloves, and disposable coveralls. Nobody works this without a respirator because "it's just a quick look."
- Wet it down before you touch it. A light mist of water or a disinfectant solution keeps the material from going airborne. Dry sweeping a contaminated flue is the single worst thing you can do in this job.
- Bag at the source. Everything comes out in sealed heavy-duty bags, closed inside the work area, wiped down on the outside, and carried out. Do not carry an open container through the customer's house.
- Contain the room. Plastic at the firebox opening, drop cloths, negative air or a HEPA-filtered vacuum if you have one. A standard shop vac blows spores through its exhaust and makes it worse.
- Disinfect after removal. Apply an appropriate disinfectant to the surfaces you cleaned and give it the dwell time on the label, then re-inspect.
- HEPA vacuum the surrounding area and any surfaces in the room that could have caught airborne material.
- Doff PPE in order and bag it. Coveralls and gloves go into the waste bag on site, respirator gets cleaned or the cartridges replaced, hands and face washed before you eat, drink, or get in the truck.
- Know when it is not your job. Large bat colonies, an accumulation deep enough that you cannot see the flue surface, or any contamination that has spread into the attic or wall cavity belongs to a wildlife or biohazard remediation contractor. Bat work also carries protected-species and exclusion-timing rules in many states. Refer it, document why, and stay out of it.
Tell the customer what you found and what it means, in writing. A contaminated flue plus an uncapped chimney is a repeat problem, so the cap goes on before you call the job closed.
References
- Migratory Bird Treaty Act (federal)
- Endangered Species Act
- State wildlife regulations
- USDA APHIS Wildlife Services
- Local wildlife rehabilitator directories
- CSIA training on wildlife
- Manuall internal: Chimney Sweep Service SOP, Install Chimney Cap, Annual Chimney Inspection