If bats are getting into your house, attic, walls or living space, the problem is almost never one obvious hole.
Most London homes contain many hidden construction gaps that bats can use. We find the active entry points, install humane excluders, and permanently bat-proof the structure so the bats cannot return.
Houses are built to keep out rain, wind, and snow — not bats. Small gaps around soffits, fascia, chimneys, roof intersections, vents, siding, flashing, and roof edges can provide access to attics, walls and then into your living space.
In London, Ontario, most bat problems involve big brown bats, a species well adapted to living in buildings year-round. Once bats find a protected space inside a home, the problem usually gets worse over time unless the structure is properly bat-proofed.
How Bats Get Into London Homes
Bats do not chew their way into houses. They use existing openings caused by construction gaps, missing flashing, loose fascia, damaged vents, warped ridge vents, roof intersections, and areas that have deteriorated over time. Many of these openings are hidden under shingles, behind gutters, around chimneys, or high on the roofline where they cannot be seen from the ground.
Common Bat Entry Points We Find on London Homes
Chimney Flashing
Gaps around chimney flashing and masonry are common and often difficult to see from the ground.
Soffit/Wall intersection gaps
Gaps between walls and soffits are the #1 spot where bats gain entrance to houses.
Missing Drip Edge
Hard to see framing gaps left uncovered by the absence of drip-edge flashing can allow bats and other wildlife to enter the attic
Gas Fireplace Vents
Factory vent covers may contain openings large enough for bats to roost inside or behind the vent assembly.
Dormers and Roof Intersections
This gap between the soffit and roof shingles on a dormer was being actively used by bats to enter the home.
Gas Furnace Vents
Warped, lifted, or damaged vents can create concealed openings on the roof.
Ridge Vents
Removing the ridge cap reveals a large hidden gap along the roof peak. Openings like these commonly allow bats to enter attic spaces unless properly screened and bat-proofed.
Roof Vents
The lower edge of this plastic roof vent has been damaged, creating an opening large enough for bats to enter the attic.
Chimneys
An uncapped chimney flue and deteriorated chimney crown. Chimneys in this condition can provide access for bats, birds, squirrels, and other wildlife.
Found a Bat Inside Your Living Space?
What does it mean?
If a bat has appeared in a bedroom, basement, bathroom, or living space, it usually means bats are already living somewhere in the structure. The bat likely came out of your walls and attic, into unfinished area like a basement or furnace room and then become lost inside the home.
Removing the single bat does not solve the problem. The house still needs to be inspected to find out how bats are getting in and how they are moving through the structure.
One of the biggest mistakes in bat removal is focusing on a single visible opening. Successful bat control requires identifying all the active entry points, locating all possible entry points, and sealing them before bats discover them.
If even one opening is missed, bats can continue to access the structure.
“Bat control is 1% exclusion & 99% prevention work.”
Benjamin Vaughan. Founder Bat Control Specialists
1. Inspect the Home
We inspect the roofline, chimney, soffits, fascia, vents, siding, flashing, roof intersections, for all possible entry points.
Inspecting houses for bat entry points is largely done high up at the tops of ladders and on roofs.
Searching for hard to find bat entry points on roofs
2. Install Humane Bat Excluders
Where bats are actively entering, we install one-way excluders that allow bats to leave safely but prevent them from getting back in.
A bat excluder has been installed at the base of the chimney over an active bat entry point. The surrounding flashing and chimney base were then secured to prevent bats from re-entering once they exited.
A bat excluder installed at peak of roof to allow bats to leave while preventing them from re-entering the home.
Not all bat excluders are the same. Wildlife companies frequently use cheap plastic excluders and wildly dangerous excluders made of mest.
We caulk, seal, screen, fasten, repair, and reinforce the vulnerable areas so bats cannot return.
Large gaps where soffits meet siding and trim are common bat entry points. These openings are being professionally sealed as part of a permanent bat-proofing project.
Bat exclusion work being completed at the upper roofline of a home. Bats often enter through small gaps around fascia, soffits, gable peaks, dormers, and roof intersections.
4. Guarantee the Work
We give you a lifetime guarantee that we fix the problem.
Bat removal is very different from raccoon, squirrel, or skunk work.
Bats do not chew their way in, and their entry points are usually high up, hidden under shingles, behind flashing, around chimneys, along roof edges, and in areas only accessible with tall ladders and roof access equipment.
Many failed bat jobs happen because the obvious gaps were sealed while the actual entry point was never found. A proper bat removal job requires a detailed inspection, humane exclusion, and complete bat-proofing of the home.
In Ontario, the most common species encountered is the big brown bat. Big brown bats often live in buildings year-round and may use walls, attics, roof systems, and basements.
Little brown bats are less common today than they once were, but they can form much larger colonies when they establish themselves inside houses.
A big brown bat resting on the outside of a home in London, Ontario. Bats seen on exterior walls almost invariably mean bats are living in your building.
A little brown bat resting on the exterior wall of a home. Little brown bats are capable of forming large maternity colonies and have historically been responsible for some of Ontario’s largest residential bat infestations.
Click to learn about Ontario’s two most common house-dwelling bats.
“Benjamin and Kenny are the best in the business. Benjamin received my late night frantic phone call and took the time to explain EVERYTHING to us. There was no need to look further. We are so grateful for their excellent work and for their patience and professionalism throughout this ordeal. I would highly recommend their services!
Thanks to Benjamin and Kenny for coming so quickly.”
★★★★★
Spent Tons Of Money On “Others”
“Ben and his team are very professional and knowledgeable. After spending tons of money with other bat guys Ben and his crew came out and got rid of them for good. I recommend anyone who has a bat problem to give these guys a call. They are the real deal. Im very impressed with their workmanship and professionalism.
Thanks Ben”
★★★★★
“Knows His Stuff”
“How often do you call a company and they talk you OUT of their services? I had a very informative conversation with Benny who reassured me about our bat issue at home, leading me to understand that it wasn’t as urgent as I thought. He obviously knows his stuff and is an honest guy as he could have easily upsold me on expensive bat removal services that I didn’t actually need. One conversation like this really makes you trust someone, and I know who we’ll be calling if it ever truly gets out of hand.”
We provide bat removal and bat-proofing in London, Ontario and surrounding Southwestern Ontario communities.
We Also Serve..
St. Thomas
Strathroy
Komoka
Dorchester
Lucan
Ilderton
Arva
Delaware
Thames Centre
Middlesex County
Frequently Asked Questions About Bat Removal in London, Ontario
How do I know if bats are living in my house?
Look for these signs. All of them are definitive signs you have at least some bats living in your building.
Bat inside your home. Never a fluke, always definitive.
Bat poop outside
Staining
Bat guano on top of attic insulation
Bats in the attic
Bats found hanging on the building exterior.
Will bats leave on their own?
No, established colonies usually do not simply abandon a good roost.
Can I seal all the holes myself?
Not a chance. You need lots of specialized tools, equipment and years of experience.
Where do bats live inside houses?
Primarily in walls and attics, although they mostly use attics as a toilet and for night roosting.
How small of a gap can bats use?
Tiny gaps of less than a 1¼ inch by ¼ inch to get in. Take a pencil and measue 1 and a quarter inches of it. Thats enough.
Do you remove bats humanely?
Yes, we exclusively use humane exclusion devices that let bats out but not back in.
A bat excluder installed at peak of roofto allow bats to leave while preventing them from re-entering the home.
Custom aluminum bat excluder installed over a bat entry/exit point on the base of a chimney of a london ontario area home
Do you bat-proof the whole house?
Yes, because without proper prevention work, you cannot exclude the bats and keep them out.
Without this…
Large gaps where soffits meet siding being sealed
Prevention work
Bat-proofing work being completed on an Ontario home
This excluder…
A custom bat excluder is shown before being installed over an active bat entry/ exit point on a house.
Won’t work.
Installed bat excluder on a gap where the soffit meets the brick wall
Do you guarantee the work?
Yes we typically give lifetime warranties. To read why are warranties are different than those offered by wildlife control companies click the link below.
If you are seeing bats inside your home, finding droppings near the roofline, or watching bats leave the same area at dusk, your home needs a proper bat inspection. We provide humane bat removal, complete bat-proofing, and guaranteed long-term protection for London-area homes.
For A Free Estimate
Fast, humane, guaranteed bat removal. Serving London and the surrounding area
![big brown bat inside a london area home - [ ] By Bat Control Specialists Canadas No1 bat control and bat removal company.](https://batcontrolspecialists.com/wp-content/uploads/2026/06/IMG_1899-scaled.jpeg)
![aluminum soffits on an ontario home corroded by bat urine - [ ] By Bat Control Specialists Canadas No1 bat control and bat removal company.](https://batcontrolspecialists.com/wp-content/uploads/2026/06/bat-urine-stains.png)
