Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
A bat colony in your attic is a noise problem, a smell problem, and a legal problem at the same time — and swinging at them with a tennis racket is not an option. Bats are protected in most places, they can squeeze through a gap about as wide as your thumb, and once a colony settles in, the scratching and chirping starts before dawn every single day. The clean answer is a one-way exclusion device: a cone or tube you mount over the exact hole the bats are using, so they crawl out at dusk to feed and then cannot find their way back in. You are not trapping anything and you are not poisoning anything. You are just making the front door one-way.
I’m Mohammad Maruf — the founder and writer behind KitchPrep. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Before you scroll, one honest note: this shortlist uses flexible, human-like matching for one-way exclusion design, so not every pick is the exact number you typed in — the nearest same-type size or shape serves the same job. These are the best Bat Exclusion Device options worth mounting this season.
Our Picks at a Glance
How To Choose The Best Bat Exclusion Device
You are not shopping for a trap. You are shopping for a tube that a bat can crawl down and not crawl back up. That single idea cuts the whole market in half, because anything with a moving flap or a hinged door is something that can jam, rust, or hang open. Here is what actually separates a device that clears your attic in a week from one that sits there for a month while the scratching continues.
Opening size and interior surface
Bats exit by crawling, not by flying straight out. That means the tube needs a wide entry and a narrow exit, with walls smooth enough that tiny claws find nothing to grip. A cone that tapers from roughly 2-1/4″ down to 1-1/2″ is sized for bats and similar small animals. One that stays too wide the whole way through gives a bat a runway it can turn around on, and you will hear it come back in the same night.
Mounting angle and where the opening points
Gravity is your assistant here. Mount the cone at a downward tilt — many makers call for somewhere between 10 and 20 degrees from horizontal, while a few ask for a steeper drop — so the exit sits lower than the entry. The opening should face outward and downward, away from the wall, with nothing nearby the bats can climb onto. If a porch light, a shutter, or a gutter edge sits next to the opening, bats will use it as a ladder right back to the hole.
How many units you actually need
One device covers one entry point. Walk the outside of the house at dusk and count every gap you see bats using — often there is more than one, especially at the junction where a soffit meets brick. Multi-packs make sense for that reason, and so does buying one extra to keep in the garage, since these cones are reusable and a colony can return in a later season. Seal every other gap first, so the only way out is through the device.
Quick Comparison
| Model | Best For | Style | Units Included | Material | Amazon |
|---|---|---|---|---|---|
| One Way Bat Door, Bat Exclusion Device for House, Bat Cone★ Best Overall | First-time DIY exclusion | Tapered cone | 6 pack | Polyethylene (PE) | Amazon |
| WCS Bat Cone II One-Way Bat ExcluderLong Run Favorite | Long-running proven design | 6″ tapered cone | 1 count | Polyethylene | Amazon |
| WCS Pro-Cone One-Way Bat ExcluderSee-Through Pick | Seeing the exit for yourself | Clear cone | 1 count | Polycarbonate | Amazon |
| 6 Pack Bat Exclusion-One Way Bat Door | Covering several roost points | Elliptical cone | 6 pack | Polyethylene (PE) | Amazon |
| 4 Pcs One Way Bat Door, Bat Cone One Way Excluder | Rental and commercial buildings | Tapered cone | 4 pack | Plastic | Amazon |
| TOPOWN Bat Exclusion Device, One Way Bat Exclusion Door | Tight or awkward mounting spots | Adjustable tube | 2 pieces | Galvanized iron | Amazon |
| Bat Cone One Way Excluder for Bats | Small, odd-shaped gaps | Beveled flange cone | 1 count | Plastic | Amazon |
| Briidea One-Way Exclusion Tube, 2 Pack | Angled vent and wall openings | Bendable tube | 2 pack | Plastic | Amazon |
| The Bat Valve TBV-FR4 | Permanent, set-and-stay installs | Metal one-way valve | 1 count | Stainless Steel | Amazon |
In‑Depth Reviews
1. One Way Bat Door, Bat Exclusion Device for House, Bat Cone
Our pick — over 4★ from 60+ verified ratings; the strongest balance of quality and price.
Six cones and a roll of tape — the whole attic eviction kit in one box.
Most homeowners do not have one bat hole, they have three or four. This Elspezi set hands you six tapered polyethylene cones, matching self-tapping screws, drywall anchors, and super-sticky duct tape, so you can cover every gap you find on the first afternoon instead of ordering a second box mid-job. The 15-degree-style tilt is built into the shape: mount it opening-down and outward, and a bat crawling down the smooth interior has nothing to grab on the way back. If your openings are wider than the cone base, the included tape is meant to bridge the gap and seal the uneven edges — and the cones are designed to sit side-by-side when one area needs more coverage.
What wins people over is raw function. One buyer framed the entry, mounted a single cone, and had the colony out within a week with no re-entry. That is a week to clear a colony, and the same account notes they then pulled the frame and sealed the entry for good. It is not a one-trick device either — mounted correctly, these cones are also used on soffits, ridge vents, and gable vents, and buyers have leaned on them to move small birds out of an attic by closing every other opening and setting the cones on the rest. The price sits in the mid-range tier, and the fact that one purchase covers a whole wall of entry points is a big part of why this takes the top spot.
The honest catch is surface prep, not the cone itself. The 4.3-star rating across 60 ratings comes with a recurring note that you may need to get creative sealing around the base where the wall is uneven — one buyer used leftover window screen to close up the edges before the tape went on. Plan for five extra minutes per hole, keep the tape handy, and this is about as close to plug-and-play as bat exclusion gets.
What works
- Six cones in one box — enough entry points covered without a second order
- Comes with screws, drywall anchors, and duct tape, so no separate hardware run
- Smooth tapered interior shuts down re-entry once the cone points down and out
- Reusable polyethylene build that also handles small birds in attic spaces
Where it takes work
- Uneven wall surfaces near the opening may need extra sealing material to close the base
- You supply the frame or patching material for oversized gaps
- Multi-unit installs take a full afternoon if you have several roost points
Grab this if: you want one order to handle every bat hole you can find, with tape and screws already in the box.
Look elsewhere if: your openings are wide and irregular — you will want to budget for a frame or extra screening before mounting.
2. WCS Bat Cone II One-Way Bat Excluder – 6″ Reusable Polyethylene Exit Cone for Attics, Soffits & Rooflines
The six-inch cone with the four tabs that bend to whatever your siding happens to be.
The single number worth knowing here is 6″ — that is the cone length, and it is what makes this one forgiving on awkward walls. Four flexible polyethylene tabs bend to conform to siding, brick, wood, or vinyl, so you can screw, staple, or caulk it down without building anything. It covers openings up to 2″ across. WCS calls for a downward tilt of 10 to 20 degrees from horizontal and a 3-5 day minimum wait before you seal the hole permanently, and the interior is deliberately smooth so a bat cannot clutch the walls and crawl back. Because it is one cone per entry point, using it on a house with several gaps means buying more than one.
What the reviews consistently point to is that it does the job once it is up properly — the recurring story is a cone mounted at a soffit-and-brick junction, bats filing out one by one at dusk, then a two-week wait before the gap gets sealed with expanding foam. One buyer watched bats file out one by one the first evening, waited two weeks to confirm full evacuation, then sealed the entrance. The gripes are mostly about cost rather than performance — a fair number of owners felt a molded plastic cone should cost less, and a few noted the opening felt small for larger animals. It is a single cone at a mid-range price, so multi-point jobs add up.
Where this edges out the multi-pack picks above is surface adaptability: those tabs genuinely fit more wall types without extra hardware. Where it falls short of the Elspezi set is sheer coverage — one cone means one hole, and you will be ordering again if you find a second gap. For a house with a single obvious entry point and tricky trim to mount against, this remains the safest bet on the list.
Tab-to-surface fit: Screws, staples, or adhesive caulk all work here, and the four bending tabs sit flush on siding, brick, wood, or vinyl without a custom bracket.
One hole, one cone: The 6″ cone covers openings up to 2″ across, and it cleans up and stores for a future season once the colony has moved on.
Reach for this if: your entry point is a single, clearly located gap and the surrounding surface is hard to mount flat hardware against.
Skip the single unit if: you already know there are multiple gaps — a multi-pack will cost you less per hole than buying this one twice.
3. WCS Pro-Cone One-Way Bat Excluder – Clear Polycarbonate Wildlife Exclusion Device
A clear cone so you can watch the last bat leave before you seal the hole.
Doubt is the real enemy in bat exclusion. You mount a cone, you wait, and you have no idea whether the colony is empty because you cannot see inside. This Pro-Cone answers that — it is built from clear polycarbonate, so you can look straight at the opening and confirm the traffic has stopped. The material is UV-resistant, so it is meant to stay see-through rather than yellowing over a season it spends bolted to a sunny eave, and at 2.39 ounces it is light enough to mount with a few 3/8″ staples, 1″ screws, or silicone caulk. The opening tapers from 2-1/4″ to 1-1/2″, sized for bats and small flying animals.
The maker is blunt that it will not handle gray squirrels, which are too big and strong and will shove right back through, and it is not built for mice either. A 1-star reviewer warned that it only works on small bats and needs a flush mounting spot, or the animal simply goes around it. The same review warns that anything at ground level will simply chew through it. Read the sizing before you buy, and this cone does its one job well — buyers describe bats leaving on the first night and not returning, and another group used it successfully on flying squirrels and bats together.
The practicality is in the reusability and the tamper evidence. Once the traffic stops, you remove the cone, seal the opening permanently, clean it, and it is ready for the next building. And because it is clear, you can spot a bat still clinging inside before you make the hole permanent — which avoids the single worst outcome in this whole process.
Sized narrowly, on purpose: The cone narrows to 1-1/2″ at the tip and is built for bats and small flying animals — know your pest before you mount it.
Know the limits: It is not designed for gray squirrels, which push back through, or for mice, which are too small to trigger the exit at all.
Best for: bat and flying-squirrel jobs where you want visual proof the space is empty before sealing.
Not for: anyone dealing with gray squirrels or mice — this cone is deliberately sized for bats and similar small animals.
4. 6 Pack Bat Exclusion-One Way Bat Door, Reusable Tool for Remove Roof Noises
An oval-shaped cone engineered so bats climb out easily and cannot turn around inside.
The shape is the story with this Sitroasho set. Instead of a round opening, it uses an elliptical cone with a slender tubular run and a 15-degree downward slope, so the bat has an easy crawl outward and no room to reverse once it is inside the tube. You get six of them, each running 6.1 by 3.6 by 1.6 inches and weighing just 40 grams, which means a very light footprint on a soffit — no extra bracing needed for the structure. Screws are included.
Buyers treat this as an install-once family of devices rather than a throwaway. The recurring pattern in the reviews is a homeowner cutting a hole in 1/4″ screen, setting the cone into the space, and watching bats find their way out over the following nights with no re-entry — One buyer cut a hole in 1/4″ screen, set the cone in, and the bats exited without finding their way back in. Several people also use it against small birds in the attic, closing most holes and leaving the cones on the remaining ones. A few notes flag it as a permanent fixture, with reviewers screwing the cones into the soffit where the entry is and leaving them there through the season.
The one thing to square away before you order is timing. Bat pups cannot fly for several weeks after birth, so if you mount cones over an active nursery you may seal a colony in rather than out. Plan the job for late summer or early fall when the young can fly, and this six-pack handles even a sprawling roofline.
Light on the structure: At 40 grams per cone, the mount adds next to no load — useful on older soffits and fascia where you would rather not drill into heavy trim.
Plan the season: Time your install after the pups can fly, or you risk sealing young bats inside instead of letting them leave.
Pick this if: you have a large attic population spread across several roofline gaps and want one box to cover the lot.
Hold off if: your colony is still raising pups — wait until the young can fly before any cone goes up.
5. 4 Pcs One Way Bat Door, Bat Cone One Way Excluder for Bats
Four cones with 32 screws — built for landlords facing a whole building of bats.
Where the multi-packs above go after one roofline, this KKONHII set is aimed at property managers. Four cones, each roughly 5.9 by 2 inches, plus 32 screws, so you can mount every corner of a rental in one go. The cones are polyethylene, and the maker emphasizes two things: the lightweight build keeps the load off your soffit and fascia, and the narrow opening blocks the return trip. The mounting recommendation is steep — install at a downward tilt of more than 60 degrees, which forces bats through the tapered tube quickly instead of letting them linger.
The success stories are the interesting part. One buyer cleared a severe rental infestation by mounting the doors on each corner with a slight downward tilt that denied bats any grip. Another counted the evicted bats and reported the colony emptied out and quiet. Several homeowners who were ready to hire a pro say the cones let them handle the job themselves: they sealed the entry points, mounted the cones, and within a day the bats were gone. A 2-year warranty is listed on the spec sheet.
The wrinkle is hardware quality. A few buyers found the included screws flimsy and swapped in their own, and one described the cones as cheaply built. That is a small gripe you can route around in about a minute at the hardware drawer — use your own screws and the cones themselves hold up. For anyone with more than one building to clear, the per-hole cost here is where the value sits.
Built for scale: Four cones and 32 screws in one box set you up for a whole rental unit with multiple entry points.
Hardware to swap: Some buyers ditched the included screws for their own — a one-minute fix that leaves the cones themselves working fine.
Suits: landlords and commercial property owners clearing several entry points on one or more buildings.
Think twice if: you have a single gap at home — you will end up storing three spare cones for a future season.
6. TOPOWN Bat Exclusion Device, One Way Bat Exclusion Door
A bendable tube up to 16″ long, so it fits the odd angles other cones cannot reach.
Most exclusion cones assume a flat wall. This TOPOWN set does not. It uses an adjustable self-supporting tube that can run up to 16″ long, with a steel wire inside that lets you bend it to the angle your building actually presents — dormers, steep pitches, recessed eaves. Two units come in the pack. The valve end is a galvanized iron plate that blocks re-entry, chosen because it resists rust and is meant to be left in place rather than dismantled, and the spec sheet puts its working life at up to two years in the maker’s test environment.
Owners with difficult geometry are the happiest here. One account describes an older house with a steep pitch and a dormer where other cones simply would not fit — the tube bent to the needed angle, and with gaps filled using copper mesh and spray foam, the job was solved. Another evicted roughly 60 bats from an attic without hiring a professional. Two more mention the same satisfaction of solving it without a contractor: one kept the population down rather than eliminating it and was happy with that, and another saved a quote worth well over a thousand dollars by doing the work alone.
Be aware of the one real design quirk before you buy. A smaller group of buyers report the tubing wants to snap back toward straight when you push it up or down, which can open the door again for returning bats. The fix is simple and worth doing on day one: tie, tape, or screw the tube so it holds the angle you set. Lock the bend in place, and this becomes among the most versatile devices in the lineup.
Where the bend wins: A tube that runs up to 16″ and holds a custom angle clears dormers, steep roofs, and tight recesses that flat cones cannot span.
Lock the angle: The tube tends to drift back toward straight, so secure it with tape or a screw after you set your downward tilt.
Choose this if: your roofline has awkward angles, dormers, or tight spots where a rigid cone will not sit flat.
Not needed if: you have a simple flat wall — the cheaper fixed cones will do the same job with less setup.
7. Bat Cone One Way Excluder for Bats
A two-ounce plastic cone with a snappable flange for tiny, awkward gaps.
The whole device weighs two ounces and arrives with pre-drilled holes in the flange, so mounting takes minutes. The clever bit is the beveled flange: it bends or snaps off in sections when your gap is small, so you can trim the base down to a shape that actually fits a tight soffit opening instead of forcing a full-width cone over it. Once it is pointed downward, it works without any flap or moving part, and the smooth plastic interior keeps bats from crawling back up. It is reusable and sized for adult installers with no special skill required.
Where owners are happiest is on a straightforward single entry. One described finding the hole and watching the bat traffic simply stop, another said the doors let the bats out and they have not returned. Two others flagged it as easy to point down and forget about. The divide is on the physics versus the expectations. One frustrated buyer could not find any internal valve and reasoned there was nothing stopping a bat from returning, and another said a bat went straight back in — while the maker’s own reviews note that this is a smooth-tube design with no flap, and the downward angle is what does the work. Pointed down with clearance below, it does not need a valve.
A brand new detail to check on arrival: some units ship with a tracking sticker stuck to the front face. It comes off hard, can leave a white patch on the black plastic, and a few buyers rated it down for the cosmetic scar alone. Functionally it does not matter, but pick it off with a little care if looks matter on a visible eave.
Trim to fit: The beveled flange can be bent or snapped off in pieces for narrow gaps, and the lightweight build is easy to hold in place while you drive the screws.
Angle does the work: There is no flap or valve here — the downward point is the entire mechanism, so a bat needs clear air below to fall out of the tube.
Works well for: a single, clearly identified gap where you want a light cone you can trim to size.
Not the fit if: you expect a movable flap inside — this is a smooth run, and re-entry is stopped purely by the downward angle.
8. Briidea One-Way Exclusion Tube, 2 Pack
Two bendable tubes you can shape to the opening rather than the other way round.
Briidea’s pitch is flexibility. The two tubes in this pack bend and hold their shape so you can customize the length and angle to whatever vent, eave, or wall gap you are facing. The one-way mechanism lets animals exit and blocks the return, and the maker asks you to seal every other opening first so the tube is the only way out. It is reusable and built to be redeployed when a new gap appears.
The consistent positive here is the angle control. One homeowner who studied the design concluded there was no valve at all — just a tube narrow enough that a bat cannot fly out with wings spread, so it crawls down and drops, and cannot get back up. The same account gave the practical tips: run the tube away from the house, keep the opening clear so nothing nearby gives a bat a climbing route, and angle it slightly downward so rain cannot run in. Another simply sealed all but one entrance with spray foam, set the cone, and reported a colony gone. Buyers describe the nighttime exodus clearly — one said the animals were “all out on first night.”
Order this one with eyes open. Reviews on this model are split, and the recurring complaints are about size and value rather than the design idea — a couple of buyers felt the tubes were smaller than expected for a vent opening or pricier than the simple materials suggest. If your gap is large, measure first and plan to combine the tube with mesh or backing material to close the extra space. Get the fit right and the bend is genuinely useful on a vent that runs at an angle.
Shape-to-fit: The tube bends to follow an angled vent or a recessed wall gap, a common place where rigid cones sit proud and leak.
Measure first: Some buyers found the tubes smaller than their opening — pair the tube with mesh or backing to close any extra space.
Good for: angled vent and wall-gap jobs where a straight cone will not lay flat, and you want two tubes on hand.
Check the fit first: large openings will need extra mesh or backing, so confirm the tube width matches your gap before ordering.
9. The Bat Valve TBV-FR4 Bat Removal Device
A stainless steel one-way door meant to stay bolted in place for good.
Everything else on this list is plastic. This one is stainless steel and made in the USA, which is why it sits in the top tier and why it is the pick for anyone who wants to mount a device once and leave it up permanently. It is a one-way door rather than a smooth cone — the engineered attachment is designed to sit flush over the exit, and the maker calls it a professional-grade eviction device for getting rid of bats for good.
Owners trust the steel. The strongest accounts describe the colony leaving on the very first night, and buyers consistently credit the reviews for steering them to this model over the plastic cones. A fast install is the norm — One buyer sealed around the device, watched bats pour out at dusk “like a faucet,” found the attic empty two days later, and sealed the hole for good. That same buyer put the saving from skipping a wildlife removal company well into the thousands. Another notes that a pest control company quoted several hundred dollars to install a very similar system.
Two things to weigh before you commit. First, the door comes in more than one mounting style, and the wrong version for your wall will not seat properly — one owner whose exit location did not suit this variant simply bought the same product with a different mounting system and it worked overnight. Second, this is the top-tier price on the list, and a fair number of buyers felt a small metal device should cost less. If you plan to leave a valve on the house for years, the stainless build earns that back.
Why it holds up
- Stainless steel build with no rust-prone plastic to age in the sun
- Designed as a permanent one-way door you can leave mounted for good
- Fast, engineered attachment that seals flush against the exit
- Made in the USA
What to plan for
- Comes in multiple mounting styles — match yours to the wall before ordering
- Top-tier pricing that some buyers felt was steep
- Sealing the surrounding gap still takes your own mesh or spacer material
Settle on this if: you want a steel valve permanently on the structure, with no plan to remove it.
Verify your mount first: the door suits specific wall types, so confirm the style fits your eave before you buy.
Understanding the Specs
Cone diameter and taper
The wide end is what a bat crawls into, and the narrow end is the one-way gate. A taper from about 2-1/4″ down to 1-1/2″ is the balance for bats — small enough at the tip to stop a return, wide enough at the base to accept the animal in the first place. A tube that stays wide all the way through is easy to enter but also easy to turn around in, which is why the tapered shape matters more than the brand. When you see a device advertised with a specific opening size, treat it as a sizing guide for your pest, not a marketing detail.
Material and mounting tabs or flanges
Polyethylene and polycarbonate cones are the standard because they are light, weather-resistant, and smooth inside — the smoothness is what denies a bat something to grip. Flanges and tabs are how you fix the cone to the wall: flexible tabs bend to siding, brick, wood, or vinyl, while a beveled flange can be bent or snapped off to trim the base to a small opening. Metal versions, like stainless steel or galvanized iron, cost more but are the choice when you want a valve left in place for years without the plastic aging under the sun.
FAQ
Will a bat exclusion device work if my house has several entry points?
How long should a one-way bat door stay up before I seal the hole?
Why is there no flap or valve inside my bat cone?
Will a bat exclusion device also keep out squirrels or mice?
What is the right angle to mount a bat cone at?
Can I install a bat exclusion device in the middle of summer?
Are bat exclusion devices reusable, or do I throw them away?
Do I need to seal the area around the exclusion device?
Where should I mount a bat exclusion device on the house?
Final Thoughts: The Verdict
If you want one box to cover the whole problem, the One Way Bat Door, Bat Exclusion Device for House, Bat Cone is the one to grab — six cones, screws, and tape on the highest-rated footing in this lineup, and a shape that lets you finish the job in an afternoon without a second order. If your entry point is a single awkward gap and the mount surface is the hard part, the WCS Bat Cone II has the tabs that conform to almost anything. And for landing bats on a difficult roofline with dormers or a steep pitch, the bendable TOPOWN one-way door bends to the angle your building actually has. Whichever you pick, get it up before the season turns and seal every other gap the same day.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of September 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
As an Amazon Associate, KitchPrep earns from qualifying purchases. This does not affect which products we feature.
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