How can I get rid of bats in the basement? - briefly
Identify and seal every crack, gap, or opening that provides access, then fit a one‑way exclusion device to allow the bats to leave but block re‑entry. After the colony exits, apply a durable sealant and, if needed, consult a licensed wildlife‑control professional to confirm the area is bat‑free.
How can I get rid of bats in the basement? - in detail
Bats in a basement create health risks and structural damage, so immediate action is required.
First, verify that the animals are indeed bats. Look for nocturnal activity, droppings (guano) that are dark and crumbly, and a distinct odor. Confirming their presence prevents unnecessary measures on other pests.
Next, assess entry points. Inspect walls, foundation cracks, vent openings, utility penetrations, and gaps around pipes. Use a flashlight to trace flight paths and note any openings larger than ½ inch.
After identification, implement exclusion:
- Timing – Perform exclusion during late summer to early autumn when juvenile bats have left the roost; this complies with most wildlife protection regulations.
- One‑way devices – Install netting or tubes that allow bats to exit but block re‑entry. Secure each device tightly to the surrounding structure.
- Seal gaps – After all bats have exited, fill cracks with expanding foam, steel wool, or cement. Use weather‑resistant caulk for small openings around vents and pipe sleeves.
If the colony is large or active during prohibited seasons, contact a licensed wildlife control professional. They can apply humane capture methods, such as mist nets or live traps, and relocate the bats to an appropriate habitat.
Address health concerns promptly. Bat guano can harbor Histoplasma capsulatum fungus. Wear a N‑95 respirator, disposable gloves, and protective clothing when cleaning. Remove contaminated material, place it in heavy‑duty bags, and dispose of it according to local hazardous‑waste guidelines. Disinfect surfaces with a solution of one part bleach to nine parts water.
Finally, install preventive measures to deter future infestations:
- Maintain a clear perimeter around the foundation, eliminating overgrown vegetation that provides shelter.
- Install fine‑mesh screens on vents and exhaust fans.
- Ensure that roof eaves, soffits, and crawl spaces are sealed.
Following this systematic approach eliminates the current problem, safeguards occupants’ health, and reduces the likelihood of recurrence.