The 5 Most Common Places Bats Get Into Houses

Where bats actually enter—and why finding one opening does not always mean you have found the whole problem

By Benjamin Vaughan, Bat Control Specialists

Based on 38 years of specialized bat-control work in Ontario, Quebec, other parts of Canada and consulting with United States, along with consultations on difficult bat problems across North America.

I can state categorically that bats regularly choose the same 5 places to get into houses, If they are available. Now the average house has thousands of potential entry points, that the bats could use to get into your home. But they always choose these 5 places because they are the path of least resistance.

And just like us humans they would rather walk in the front door than go thru a second story window. So here are 5 most common bat entry points used by the two Ontario bat species that live in our houses. The big brown bat and the little brown bat.

Featured image showing a bat control specialist beside a house with five numbered markers identifying common bat entry points — This featured image highlights five of the most common places bats get into houses, including soffit-to-brick intersections, soffit-to-shingle roof junctions, missing drip-edge gaps, chimney flashing and roof vents.

Bats do not need a large or obvious hole to get into a house.

After 38 years of doing specialized bat-control work, I find that most established residential colonies enter through one of five general areas around the roofline. Individual houses are different, but the same basic construction details appear repeatedly throughout Canada and the United States.

The photographs in this article come primarily from our Canadian field work, but these roof designs and construction gaps are common across North America.

Annotated house diagram showing five common bat entry points including soffit-to-brick intersections, soffit-to-shingle roof junctions, missing drip edge gaps, chimney flashing and roof vents — This house diagram highlights five of the most common places bats get into homes, especially around the roofline and upper exterior.

Bat flying in thru an open door. By Bat Control Specialists. The no 1 bat removal and bat control company — Never Happened

The five areas are:

Soffit-to-brick intersections
Soffit-to-shingle gaps at dormers and roof junctions
Builder’s gaps beneath missing or poorly installed drip edge
Chimneys, chimney flashing and chimney chases
Ridge vents, box vents, turbine vents and gable vents

Most established residential bat colonies enter through small construction gaps around the roofline—not through the basement, foundation or front door.

The quick answer: Bats most commonly enter houses through small openings around soffits, intersecting rooflines, improperly protected roof edges, chimneys and roof vents. Finding the active hole is only part of the job because similar secondary openings may exist around the rest of the house.

Bats Usually Enter Around the Roofline

Homeowners naturally start looking where they found the bat.

Homeowner beside a basement window with a red X, while a green circle highlights a bat entry point where the soffit meets the brick. — Bats found in basements usually enter much higher on the house through gaps around the roofline, soffits and brick—not through basement windows.

If a bat appeared in the basement, they look at basement windows and foundation vents. If it appeared in a bedroom, they look at the bedroom window. If it flew through the living room, they wonder whether someone left the front door open.

That is normally the wrong place to begin.

An established colony is usually using one or more structural openings around the roof. After entering, a bat can move through the attic, down wall cavities, beside a chimney, along plumbing and utility chases, and eventually into the living space.

The room where the bat appeared may be several storeys away from the exterior opening.

1. Soffit-to-Brick Intersections

One of the most common bat entry points occurs where aluminum soffit terminates against a brick wall.

These intersections commonly appear beside:

Chimneys
Second-storey brick walls
Garage and porch roofs
Additions
Exterior corners
Changes in roof elevation

Active big brown bat entry gap under aluminum soffit trim on a brick Thornhill Ontario home. — Close-up of an active big brown bat entry point under the aluminum soffit trim on a Thornhill, Ontario brick home. These small gaps can allow bats into the wall system without leaving obvious signs of a major infestation.

The real problem is the J-channel used to finish the soffit against the masonry. It comes in long, straight lengths and cannot be shaped to follow every rise, dip and uneven mortar joint in a brick or stone wall.

Masonry is rarely perfectly straight along the soffit line. Standard brick can leave gaps where the courses or mortar joints vary, but the problem is even worse with rough-faced brick, fieldstone and other irregular masonry. The surface may project outward in some places and fall back deeply in others, while the rigid J-channel remains straight. It may touch the wall at a few high points while leaving surprisingly large openings behind it elsewhere.

The soffit itself cannot realistically be cut to match every irregular brick, stone and mortar joint. The practical solution is to seal the entire soffit-to-masonry intersection after installation, but builders rarely do this. They are usually installing the soffit as an exterior finish and are not thinking about bats or mice getting behind it.

From the ground, the joint may look reasonably tight because the visible edge of the J-channel hides the deeper opening behind it. Bats can land on the masonry, crawl behind the trim and enter the roof cavity without ever being visible. Proper bat-proofing requires inspecting and sealing the full depth of the intersection—not simply smearing caulking across the easiest part of the joint.

Large gap between the soffit and brick wall on an Ontario home. The rough-faced brick prevents the soffit trim from fitting tightly against the wall, creating a bat entry point. — The irregular surface of the brick prevents the soffit trim from sealing tightly against the wall, creating a gap large enough for bats to enter the home.

Near one-inch gap behind soffit J-channel above a window where bats and mice can enter an Ontario home. — A hidden gap behind the soffit J-channel above a window, rough-surface cornice stone, and brick. Openings like this are often hard to see from the ground but are large enough for bats and mice to use.

Here is How You Fix it.

Foam backer inserted into a large gap between brick and soffit before caulking. — Foam backer being inserted into a large gap between the brick and soffit before the final caulking is applied. Large openings like this need proper backing so the sealant can bond correctly and close the gap.

Wide bead of exterior caulking applied to seal a gap between the soffit and brick wall — A wide bead of exterior sealant was applied along the soffit-to-brick intersection to close a gap that bats could use.

2. Soffit-to-Shingle Gaps at Dormers and Roof Junctions

The second major category occurs where a soffit meets the shingles of another roof section.

These junctions are especially common around:

Dormers
Roof additions
Garage roofs
Porch roofs
Split-level houses
Inside roof corners
Changes in roof height
Complicated multi-roof designs

Bat entry point at soffit and shingle intersection on a Thornhill Ontario home. — This Thornhill, Ontario home had an active bat entry point where the aluminum soffit meets the roof shingles. These tight soffit-to-shingle intersections are common places for bats to enter homes because the gap is hidden, high, and difficult for homeowners to see from the ground.

Big brown bats emerging from a gap between the shingles and soffit of an Ontario home. Roofline gaps are a common bat entry point into attics and wall cavities. — Big brown bats emerging from an active entry point between the shingles and soffit of an Ontario home. Roofline gaps are one of the most common ways bats gain access to attics.

Soffit-to-shingle intersections are one of the most common places bats enter and leave a house. They also attract mice and can be forced open by larger animals such as squirrels and raccoons, so the repair has to do more than simply cover a visible gap.

The junction creates an ideal landing area for bats. They can land on the shingles, crawl behind the soffit and disappear into several small openings around the roof framing. It is also a common location for an active exit, but the opening usually faces outward and sits nearly level with the roof. That makes an ordinary straight tube excluder difficult or impossible to use.

We normally begin by custom-fabricating a metal soffit box that closes and reinforces the entire intersection. This prevents raccoons and squirrels from pushing their way back in and removes the smaller gaps bats and mice could use. An L-shaped soffit excluder can then be attached to the box so the bats can leave safely without returning.

making flashings to bat-proof a windsor ontario home

These repairs must be made from metal because mice will chew through weaker materials. The flashing has to be formed on a brake, fitted to the individual roof and installed with roof-grade sealant, exterior roof screws and neoprene washers. It must also be designed so water can continue to drain properly and moisture is not trapped behind the repair.

custom box flashing used to seal bat out of roof of a collingwood ontario home - [ ] By Bat Control Specialists Canadas No1 bat control and bat removal company.

Custom box flashing and aluminum bat excluder installed over a soffit-shingle gap. — Custom box flashing installed over a soffit-shingle gap with one of our aluminum bat excluders on the active exit point. The flashing closes the roofline gap while the excluder allows bats to leave safely.

Custom aluminum bat excluder installed at a roof flashing opening to allow bats to leave safely — A custom aluminum bat excluder installed at a difficult roofline and flashing area. This type of excluder is shaped to fit the actual opening so bats can leave safely without getting trapped in dangerous mesh.

The finished work should look clean and match the surrounding shingles or metal trim as closely as possible. These areas are high, awkward and technically difficult to reach, but they are among the most important parts of a complete bat-proofing job. Learning how to repair them properly takes years of experience and careful custom fabrication.

Custom box-flashing bat excluder installed over an active bat opening at a soffit and shingle junction. — A custom box-flashing bat excluder allows bats to leave through an opening at the soffit and shingle junction without getting back inside.

3. Builder’s Gaps Beneath Missing or Poorly Installed Drip Edge

A builder’s gap is an opening along the roof edge where the roof deck, fascia and soffit construction meet.

The precise shape varies from one building to another. On many houses, the roof decking stops short of the fascia or leaves an accessible space behind the fascia covering.

Properly fitted drip edge protects this vulnerable junction.

The metal extends beneath the first row of shingles, overlaps the roof edge and covers the gap between the roof deck and fascia. It serves two important purposes:

Red circle and yellow arrow highlighting the open gap between the roof deck and fascia board beside partially installed drip edge — The exposed gap between the roof deck and fascia can provide bats with direct access to the roof structure. Properly installed drip edge helps cover this opening.

White metal drip edge installed beneath asphalt roof shingles and extending over the fascia board — Properly installed drip edge extends beneath the shingles and protects the roof decking and fascia at the roof edge.

It prevents bats from crawling into the roof edge.
It helps direct rainwater away from exposed wood and framing.

Problems occur when drip edge is:

Completely missing
Too short
Installed too high
Poorly aligned
Not extended far enough beneath the shingles
Installed without covering the builder’s gap
Left incomplete around corners and roof transitions

INFOGRAPHIC — WITH DRIP EDGE VS. WITHOUT DRIP EDGE

Small section of missing drip edge at roof corner that can allow bats into the house — A small missing piece of drip edge at the corner of a house can leave an opening large enough for bats to enter behind the fascia and roof edge.

Custom drip edge piece installed at roof corner to close bat entry gap — After photo showing a custom drip edge repair installed at the roof corner to close the gap and help prevent bats from entering behind the roof edge and fascia.

First row of shingles lifted to show missing drip edge flashing and exposed roof decking along the roof edge. — Before repair: this roof edge had no drip edge installed beneath the first row of shingles. The exposed roof decking was left vulnerable to water intrusion, deterioration, and hidden gaps along the roof perimeter.

After photo showing installed custom drip edge.

Bats can crawl beneath the shingle overhang and enter behind the fascia or into the roof cavity.

Water creates another problem.

As rain runs down the roof, surface tension can pull some runoff underneath the edge of the shingles. Proper drip edge provides a metal surface beneath that overhang and redirects the water away from the roof-edge framing.

Without correctly installed drip edge, water may soak into the edge of the roof deck, fascia and connected framing.

The same defect can therefore create both a bat entry point and a moisture problem.

Gable-End Roof Edges

Builder’s gaps are also common along gable ends.

Gap in a brick wall and roof junction in Omemee that bats and mice can use to enter the house. — This opening at the brick wall was the main entry point used by both bats and mice.

The aluminum fascia covering may stop too low, leaving the edge of the plywood roof deck exposed beneath the shingles. Over time, that exposed decking can warp, separate or rot.

A bat needs only one accessible section.

Covering the opening with coarse wire mesh is not the same as repairing the roof edge. Mesh may leave the wood exposed, interfere with appearance and eventually loosen or deteriorate.

The proper repair must protect the structural gap and maintain correct water drainage.

Exposed wood roof decking between the shingles, soffit and aluminum fascia sealed with caulking to prevent bats from entering.c — The exposed gap between the roof decking, shingles, soffit and aluminum fascia has been caulked and sealed to make the roof bat-proof.

Bat-control technician sealing a gap beneath the roof shingles during professional bat-proofing in Ontario. — A vulnerable gap beneath the roof shingles is permanently sealed to prevent bats from entering the roof and attic.

4. Chimneys & Chimney Flashings.

Chimneys create some of the most complicated entry areas on a house.

The bats are not necessarily entering through the open flue. They are often using construction gaps around the outside of the chimney.

Gap between chimney flashing and brick chimney on a Thornhill Ontario home, marked as a possible bat entry point. — A gap between the chimney flashing and brick chimney on a Thornhill, Ontario home. Openings like this can allow big brown bats to access hidden wall, roof, soffit, or attic spaces.

Massive gap between the chimney flashing, brick chimney, shingles, and roof decking on a Thornhill Ontario home, marked as a bat entry point. — A massive gap between the chimney flashing, brick chimney, shingles, and roof decking on a Thornhill, Ontario home. Openings like this can allow big brown bats to access hidden roof, wall, soffit, and attic spaces.

Common chimney entry points include:

Gaps between the chimney and the exterior wall
Openings beneath step flashing
Loose or separated counter-flashing
Failed caulking around flashing
Missing or deteriorated mortar
Open chimney-chase tops
Gaps where siding or soffit meets the chimney
Unprotected flue openings
Damaged chimney caps
Openings around prefabricated chimney systems

Broken caulking and open gap between chimney bricks and flashing that can allow bats into a home — Broken caulking between the chimney brick and flashing has left an open gap that bats can use to enter the structure. Chimney flashing areas are common bat entry points when old sealant cracks, shrinks, or pulls away.

Cutaway illustration showing Big Brown Bats living inside wall cavities beside a brick chimney and travelling through small framing gaps from the attic into the walls. — Big Brown Bats commonly use the narrow gap beside brick chimneys to travel from the attic into hidden wall cavities, where they spend much of the summer.

A chimney can also create a hidden travel route through the house.

There is often a continuous space between the masonry or chimney enclosure and the surrounding wood framing. A bat entering near the roof may follow this chase downward into wall cavities, furnace rooms, finished basements or other parts of the building.

That is why finding a bat in a basement does not prove that it entered at ground level.

It may have entered at the chimney flashing several storeys above and travelled down the building beside the chimney.

Sealing one visible crack near the bottom of the chimney will not fix an opening at the roof.

The complete chimney area must be inspected from the roofline upward, including the flashing, masonry, soffit intersections, cap and flue openings.

Deteriorating chimney cap with open flue that can allow bats, rats, and other animals to enter — Before photo of a deteriorating chimney with failing concrete around a metal factory chimney liner and an open flue cap. Open chimney areas like this can allow bats, rats, birds, squirrels, and other animals into the structure.

repairs made to chimney top of an ajax ontario home to seal out bats living in the chimney - [ ] By Bat Control Specialists Canadas No1 bat control and bat removal company. — Old dormant chimney sealed off and bat-proofed.

5. Ridge Vents, Box Vents, Turbine Vents and Gable Vents

Roof vents are intended to move air through the attic.

Unprotected roof vents on a Thornhill Ontario home with no screening against raccoons, squirrels, birds, bats, or mice. — Unprotected roof vents on a Thornhill, Ontario home. Without proper screening, roof vents can be vulnerable to raccoons, squirrels, birds, bats, and mice entering attic spaces.

Wind-powered turbine roof vent that could provide a possible one-way entry point for bats — This wind-powered turbine vent was a possible bat entry point. Bats entering through vents like this may have difficulty finding their way back out.

Hand showing an open gap beneath a raised ridge vent that bats can use to enter the attic — A loose or poorly fitted ridge vent can leave a concealed opening beneath its edge, allowing bats to crawl directly into the attic.

Unfortunately, roof vents are not designed to be bat-proof.

The vent may look solid from the ground while the accessible gaps are not visible.

Ridge Vents

After photo of a roof ridge vent fitted with custom bat-proof screens to prevent bats from entering through the ridge vent. — After photo showing a ridge vent fitted with custom bat-proof screens. Ridge vents are common bat entry points when they are left unprotected or start to lift, warp, or separate from the shingles.

Ridge vents run along the peak of the roof above a continuous opening cut into the roof deck. The main problem is that many plastic ridge vents warp in the sun. Years of heat and temperature changes can distort the vent, loosen the nails and lift sections away from the shingles.

Once the outside edge rises, bats can crawl underneath the vent and enter through the opening in the roof deck below. Rodents may also chew through damaged plastic, creating additional access points that bats can later exploit.

From the ground, the ridge vent may still look properly installed. The entire vent must be examined closely for lifted edges, popped nails, separated sections, damaged end caps and chewed plastic. Any repair must close these openings without blocking the airflow the ridge vent was designed to provide.

Box Vents

BoxBox vents sit over rectangular openings cut directly through the roof deck. The problem is that most modern box vents are made of plastic, and many of them are not bat-proof on their own.

Two unprotected roof vents on an asphalt-shingle roof that may provide bats with access to the attic. — Unprotected roof vents can leave openings that bats use to enter attics.

Plastic roof vent with the side chewed open by wildlife, creating a large opening that allows bats to enter the attic. — The side of this plastic roof vent was chewed open by wildlife, creating a large opening that bats can use to access the attic.

Heat from the sun can warp the plastic, loosen the nails and lift the edges away from the shingles. Rodents and larger animals—including mice, chipmunks, squirrels and raccoons—will also chew or tear thru the vent. Once that happens, bats can enter the attic through the openings.

For that reason, we normally protect box vents with a properly fitted box screen made from half-inch metal mesh. The screen must be durable, mechanically secured and installed so animals cannot tear it loose or chew through the vent behind it. It also has to preserve the airflow the roof vent was designed to provide.

Properly sized half-inch mesh box screen installed over roof vent to keep bats out — This roof vent is protected with a properly sized box screen made from half-inch square mesh. Unlike larger mesh, half-inch screening is small enough to keep bats out while still allowing roof ventilation.

Roof vent and bathroom vent protected with custom bat-proof box screens on a Thornhill Ontario home. — After photo of a roof vent and bathroom exhaust vent on a Thornhill, Ontario home, protected with custom box screens to keep out bats, raccoons, squirrels, and mice.

A loose piece of screening laid underneath the vent is not dependable bat-proofing.

The entire vent needs to be protected against all wildlife, because damage caused by one animal often creates the opening bats use later.

Turbine Vents

Turbine vents contain moving components and large openings beneath the rotating head.

The turbine itself may discourage some entry while it is spinning, but it is not automatically a bat-proof device.

The supporting throat and roof opening must be inspected and protected without interfering with the turbine’s operation.

Technician removing a wind-powered turbine roof vent to inspect for bat access — The turbine cap had to be removed so the opening beneath it could be inspected and properly screened against bats.

Open turbine roof vent showing an unprotected opening into the attic — With the turbine cap removed, the large unscreened opening into the roof and attic was clearly visible.

Half-inch screen secured and caulked around the inside of a turbine roof vent — The screen was fitted across the opening and sealed continuously around its edges before the turbine cap was replaced.

Finding One Entry Point Does Not Mean You Found the Whole Problem

The opening bats are currently using is called the active entry point.

That does not mean it is the only opening they can use.

A house may have one active soffit-to-brick intersection and several similar gaps around the other sides of the building. Once the active opening is closed, the bats may begin testing the surrounding roofline and enter through the next available gap.

This is why proper bat control must be completed in the correct order.

The Correct Bat-Control Process

1. Inspect the complete roofline

Every soffit, fascia joint, roof intersection, chimney, vent, dormer and roof edge must be examined.

2. Seal secondary and potential entry points

Openings the bats are not currently using must be closed before exclusion begins.

3. Leave the active exit temporarily available

The bats still need a controlled way to leave the building.

4. Install a properly designed one-way excluder

The excluder allows the bats to exit while preventing them from returning through the same opening.

5. Allow the colony to leave

The timing must account for weather, season and the possibility of flightless young.

Custom black aluminum bat excluder being held before installation, designed to allow bats to exit safely while preventing re-entry. — A custom aluminum bat excluder before installation. These purpose-built excluders are designed for specific bat entry points and are made to allow safe one-way exit during professional bat-proofing.

Custom bat excluder installed over a roof edge opening to let bats exit safely but prevent re-entry — After photo showing a custom bat excluder installed over the roof edge opening bats were using. The excluder extends beyond the gutter and angles downward so bats can escape easily, but cannot get back inside.

Can Bat Entry Points Be Found From the Ground?

Sometimes an active opening is visible from the ground.

Signs may include:

Dark staining around an opening
Droppings stuck to brick or siding
Guano beneath the exit
A visible structural gap
Bats emerging around sunset
Repeated activity around one roof junction

Urine staining and discoloration on stone near the peak of a home where bats were entering between the soffit and brick wall. — Urine staining and discoloration on the stone peak below an active bat entry area. Bats were getting in where the aluminum soffit met the brick and stone wall near the upper roofline.

However, many important openings are concealed:

Behind aluminum soffit trim
Beneath shingles
Under chimney flashing
Along the underside of ridge vents
Behind gable-vent louvers
Inside complicated roof intersections
Beneath improperly fitted fascia covering

Ground-level photographs can help identify obvious construction problems, but they do not replace a close inspection of the complete roofline.

A homeowner may find one obvious opening while overlooking many less visible gaps around the rest of the house.

Do Bats Enter Through Open Doors and Windows?

A bat can physically fly through an open door or window. But bats do not randomly wander into houses.

That does not explain an established residential colony or repeated bats appearing inside a house.

When bats repeatedly show up indoors, the underlying issue is a colony using structural openings around the roofline and moving through connected attics, walls and chases.

A bat found near a window may have flown toward the light after emerging from inside the wall. That does not mean the window was its original entry point.

Repeated indoor appearances should not be dismissed as a series of unrelated accidents.

Why Some Houses Are Harder to Bat-Proof

A modern brick house with stable aluminum soffit, fascia and properly installed drip edge is generally easier to protect than a rustic wooden building.

Difficult buildings often contain:

Warped wood fascia
Tongue-and-groove soffits
Exposed roof decking
Multiple additions
Complicated roof intersections
Older chimneys
Board-and-batten siding
Open channels beneath metal roofing
Decades of repairs completed by different contractors

The more transitions a building has, the more potential entry points must be inspected.

Modern and older homes with arrows showing common bat entry points around roof peaks, dormers, chimneys, soffits, fascia, porch roofs, and roofline gaps.

The repair materials also matter.

A permanent repair must survive heat, cold, rain, snow, ice, wind and seasonal building movement. Temporary mesh, loose screening, expanding foam and oversized smears of caulking are not substitutes for fitted and mechanically secured bat-proofing materials.

The Five Most Common Bat Entry Points at a Glance

The five roofline areas we inspect most carefully are:

Soffit-to-brick intersections
Soffit-to-shingle gaps at dormers and intersecting rooflines
Builder’s gaps beneath missing or poorly installed drip edge
Chimneys, chimney flashing and chimney chases
Ridge vents, box vents, turbine vents and gable vents

The exact active opening is different on every house.

The larger lesson is always the same:

Bats are a structural problem. The solution is to identify and physically close the openings in the building.

Sprays do not repair roof edges.

Ultrasonic devices do not close soffit gaps.

Mothballs do not fix chimney flashing.

Bat houses do not seal roof vents.

Complete bat-proofing does.

Frequently Asked Questions

Where do bats most commonly get into houses?

In our field experience, the most common entry areas are soffit-to-brick intersections, soffit-to-shingle roof junctions, builder’s gaps along roof edges, chimney and flashing openings, and unprotected roof vents.

Can bats enter through soffits?

Yes. Bats frequently enter behind loose soffit trim or through gaps where soffits meet brick walls, shingles, fascia, chimneys and dormers.

Can bats enter beneath shingles?

Yes. Bats can exploit openings beneath shingle overhangs, particularly where drip edge is missing, too short or improperly installed.

Does drip edge help prevent bats?

Properly fitted drip edge can cover the builder’s gap between the roof deck and fascia. Missing or poorly installed drip edge may leave the gap accessible.

Can bats enter through ridge vents?

Yes. Certain ridge-vent designs and poorly installed or damaged vents can leave openings beneath the edges, at the ends or along the roof peak.

Can bats enter through a chimney?

Bats may enter an open flue, but they also commonly use openings around chimney flashing, masonry, caps, soffit intersections and chimney chases.

Is sealing the active hole enough?

Usually not. If similar roofline openings remain available, the bats may move to another part of the building. Secondary openings should be sealed before the active exit is fitted with a one-way excluder.

Can every bat entry point be found from the ground?

No. Many entry points are hidden beneath shingles, flashing and aluminum trim or behind vent louvers. A close inspection of the roofline is often necessary.

Why did bats return after a wildlife company sealed the entry point?

The company may have closed only the active opening while leaving secondary gaps available. The bats can then relocate to another opening on the same building.

Will a bat house encourage bats to leave my attic?

No. A bat house does not close any openings in the house. Bats may use the bat house while continuing to occupy the building.

Need Help Identifying Bat Entry Points?

Bat Control Specialists provides complete bat-proofing throughout our Ontario service areas.

We have also completed bat work in Quebec, elsewhere in Canada and in parts of the United States, and we provide consultations on difficult bat problems across North America.

Contact Bat Control Specialists

For a telephone assessment and an honest discussion about what will be required to permanently bat-proof the building.

About Benjamin Vaughan

Benjamin Vaughan has spent 38 years specializing in bat control. His work has included residential houses, cottages, commercial buildings and large historic bat infestations throughout Ontario and Quebec, elsewhere in Canada and in parts of the United States. He also consults on difficult bat-control problems throughout North America.