Bats in the Walls:
How to Get Them Out

If you hear scratching in the walls of your house at dusk or see dark shapes slipping into the eaves, bats in walls of house is not a problem to ignore. Bats can use tiny gaps to enter a wall void, roost there by day, and emerge at night through the attic or exterior gaps. The right fix is not trapping them inside, it is removing them safely and sealing every entry point after the colony leaves.

Can bats live in your walls?

Yes. Bats living in walls are using the empty space between drywall and siding, brick, or plaster as a roosting cavity. They do not chew holes the way rodents do. They enter through gaps as small as 3/8 inch, then drop into wall voids, attic corners, or chase spaces near chimneys and rooflines.

If you are asking can bats live in your walls, the answer is direct: yes, and if one bat is inside, there is often a colony above it or nearby. A single evening flight through one gap does not prove a full infestation, but repeated activity at the same opening does.

What bats in walls sound and look like

What do bats sound like in walls

People hear light scratching, fluttering, tapping, or faint squeaks in the evening and before sunrise. The sounds are soft compared with rats or squirrels. Bats in the walls also create a short burst of activity as they leave at dusk, then the wall goes quiet again during the day.

If the noise is strongest near a ceiling line, chimney chase, or a wall that borders the attic, the colony is likely using the wall void as a travel path. A strong ammonia odor near one area can mean guano buildup from a long-term roost.

How do bats hang on walls

Bats do not cling to vertical walls the way insects do. They hang by their feet from rough surfaces, nails, framing edges, beams, and insulation. In a wall void, they rest on joists, ledges, or the backside of framing, then crawl to an opening before takeoff.

Can bats climb walls? Yes, but not smooth ones. They can crawl up textured brick, siding, and rough wood using their claws. That is why a small exterior gap near a roof edge can turn into a full indoor problem.

Find the entry points before you seal anything

Do not close random holes while bats are inside. You can trap them in the walls, which forces them into living spaces. Start with an exterior inspection at dusk and look for dark stains, droppings, or a greasy rub mark around gaps.

1. Watch the house at sunset and note every spot where bats exit.
2. Inspect roof edges, soffits, fascia boards, gable vents, chimney flashing, and utility penetrations.
3. Check wall joints, loose trim, warped siding, and gaps around dormers and vents.
4. Use a bright flashlight to spot guano piles on siding, window ledges, and the ground below openings.
5. Mark every opening larger than 3/8 inch for exclusion work.

One visible entry is rarely the only one. The goal is to find every possible access point before the exclusion step.

How to get bats out safely

Use exclusion, not poison, glue traps, or homemade repellents. Those methods leave bats inside walls, create odor problems, and do not solve the entry problem. The correct approach is to let the bats leave on their own through one-way devices, then seal the house after the colony is out.

1. Choose an exclusion period when young bats can fly, then work at dusk after the colony is active.
2. Seal all secondary openings with caulk, hardware cloth, metal flashing, or exterior sealant.
3. Install one-way exclusion devices over the active exits, such as a bat cone, netting flap, or tube.
4. Leave the devices in place for at least 5 to 7 nights of clear weather.
5. Remove the devices and permanently seal the final openings with durable exterior materials.

If bats are active in the wall void, add a final check at dusk. When no bats reenter for several nights, the cavity is clear enough for sealing.

Safety, cleanup, and prevention

Wear gloves, eye protection, and a respirator rated for nuisance dust when cleaning guano. Do not sweep dry droppings into the air. Lightly mist the area with disinfectant, remove waste with disposable towels or a HEPA vacuum, and bag everything before disposal. Large accumulations in walls or attics require more extensive cleanup because guano can stain insulation and support odor.

For prevention, seal with materials bats cannot push through, including 1/4 inch hardware cloth, metal flashing, urethane sealant, and exterior-grade caulk. Keep screens on vents, repair roofline gaps quickly, and trim tree limbs away from the roof so bats do not use them as landing routes.

Bat decor, neon signs, and wall art searches

Some readers searching for bats decor on wall, black bats wall decor, or a bats wall neon sign are looking for decorations, not wildlife control. If you want decor, buy removable vinyl bats or a framed print, not pest-proofing products. For a real infestation, decor does nothing to block access or solve contamination.

If you are comparing home decor ideas to actual bats in the walls of house, keep the categories separate. Decorative bats belong on a wall. Living bats belong out of the structure before sealing begins.