Missouri bats are protected wildlife, and exclusion has to be handled carefully. Learn what homeowners should do when bats are using an attic or structure.

Bats in the Attic in Missouri: What to Do Without Making the Problem Worse

A bat in the attic is not the same problem as a mouse in a pantry. Missouri bats are beneficial wildlife, they are protected under the state’s Wildlife Code, and an attic colony needs to be handled with more care than “find hole, seal hole.”

The Missouri Department of Conservation specifically advises caution with bat-control work and recommends exclusion methods rather than casual killing.

First: is it one bat or a colony?

An individual bat can accidentally enter a living space through an open door, window or chimney. That is different from repeated evening activity from the same roofline, gable vent or attic opening.

Signs of a structural colony can include:

bats repeatedly emerging near dusk
squeaking or movement in attic spaces
droppings accumulating below a roost area
staining near a recurring entry point

Observe from a safe distance rather than climbing onto the roof at dusk with a flashlight and optimism.

Do not immediately seal an active entry point

If bats are already using the structure, sealing the opening can trap animals inside or force them into occupied parts of the building.

Missouri Department of Conservation guidance says repairs should be made when bats are absent. Exclusion work is designed to let bats leave while preventing re-entry, then seal the structure after the animals are out.

Summer timing matters

Bat maternity colonies can include young that are not yet capable of flying. Excluding adult bats while dependent young remain inside can create both an animal-welfare problem and a much worse building problem.

Missouri conservation guidance recommends caution during the summer maternity period. A professional experienced with Missouri bat exclusion can help determine appropriate timing.

What about a bat in the living space?

Avoid direct contact. If there is any possibility that a person or pet had contact with the bat, treat that as a public-health question and contact the appropriate health or animal-control authority for guidance before releasing the animal.

Do not handle a bat bare-handed.

Why attic cleanup can matter

A long-term roost can leave urine and droppings in attic materials. Cleanup, sanitation and insulation evaluation may be needed after exclusion, depending on the extent of the contamination.

The order matters: solve the access problem first, then address the aftermath.

How professional bat exclusion works conceptually

A professional typically:

inspects the structure for active and potential openings
identifies the primary emergence points
determines whether timing is appropriate for exclusion
uses exclusion methods that allow bats to leave
seals secondary gaps and then the primary opening after activity has ended
recommends cleanup or repair if needed

Around The Clock Pest Control includes wildlife removal among its services. Call (314) 303-7240 to discuss the situation and determine the right next step.

Frequently asked questions

Are bats protected in Missouri?

Yes. Missouri Department of Conservation states that all bats are protected by provisions of the Wildlife Code, with additional conservation status applying to several species.

Can I seal the attic hole at night after the bats leave?

Do not improvise an exclusion plan without confirming that no bats, especially dependent young, will be trapped inside. The full structure also needs to be evaluated for alternate entry points.

Are bats useful?

Yes. Missouri bats consume large quantities of insects and play important ecological roles.

Who should I call if someone may have been bitten or had direct contact?

Contact the appropriate local or state public-health authority promptly for exposure guidance.

Authoritative source

Missouri Department of Conservation: Bat Control, mdc.mo.gov.