The best door sweeps for keeping mice out

There is a number that decides this entire page, and it comes from the University of California's Integrated Pest Management program rather than from us: mice can enter through openings as small as 1/4 inch. UC IPM's guidance on the house mouse is blunt about the consequence — ensure all doors, windows and screens fit tightly.

That single figure reframes the gap under your door. At 1/2 inch it is not a draft that also happens to let mice in. It is a doorway that also happens to let cold in.

The part most guides leave out

Closing the gap to under a quarter inch sounds like the whole job. It is not, and this is where almost every article on this topic stops. UC IPM's companion guidance notes that openings larger than 1/4 inch should be sealed because mice will gnaw to enlarge them to gain entry.

So the seal is not a passive barrier being measured against a fixed animal. It is a barrier being actively worked on by something with incisors. A vinyl blade that closes a 1/2 inch gap to nothing has solved the geometry and left the material problem completely untouched.

Measure first — the threshold is the whole decision

1. 1Close the door and get your eye down to floor level on the inside.
2. 2Measure the gap at the latch side, the middle and the hinge side. Take the largest reading.
3. 3Compare it to 1/4 inch. At or above, treat this as an exclusion job and read on. Below it, you have a draft problem and best door sweeps is the better page for you.
4. 4Now look at the two bottom corners specifically, where the door meets the frame. Almost every sweep leaves a small triangular gap there, and that gap is frequently over a quarter inch even when the middle of the door is sealed.
5. 5If you are not sure what your reading means, how to measure a door gap has the index-card method for anything too small for a tape measure.

Match the part to your gap

Measure at the widest point. Then read across. If your measurement sits on a boundary, take the larger band — a seal that is slightly too big compresses, and one that is too small does nothing at all.

Your gap	Part type	Our pick	Price
Any gap, mice confirmed	Steel-wool-cored rodent sweep	Xcluder Versa-Line Door Sweep, Mill Aluminum, 36 inThe only pick whose seal is built around a material a mouse cannot chew through. Costs several times a plain sweep.	$62.50 · CHECK ON AMAZON
1/4 in to 5/8 in	Aluminum carrier, reinforced rubber blade	Frost King A79WHA Premium Aluminum and Reinforced Rubber Door Sweep, 2 x 36 in, WhiteCloses the gap properly and the carrier is metal. The blade itself is still rubber — pair it with fill at the corners.	CHECK PRICE
Under 1/4 in, draft only	Aluminum carrier, vinyl blade	Frost King B59/36H Premium Aluminum and Vinyl Door Sweep, 2-PackAlready below the pass-through threshold, so this is a draft fix. Vinyl is the softest blade here if anything does start chewing.	$25.60 · CHECK ON AMAZON
Any gap, no drilling allowed	Adhesive silicone sweep	Suptikes Door Draft Stopper Under Door SweepA renter's draft fix that also narrows the gap. Do not treat adhesive plus silicone as an exclusion barrier.	$7.98 · CHECK ON AMAZON

Decide the material before you decide the brand

There are two honest routes here and they cost very different amounts.

Xcluder, which makes the purpose-built option, states the case against the cheap route plainly on its own site: standard vinyl or rubber door sweeps fail because rodents can easily chew through them. That is a manufacturer describing why you should buy its product, so treat it as the interested claim it is — but it agrees with the UC IPM point about gnawing, and the two together are the reason this page exists.

Quick picks

Ranked for fit, not for hype. Tap a row to jump to the full write-up, or go straight to the listing.

#	Product	Best for	Gap range	Price
1	Xcluder Versa-Line Door Sweep, Mill Aluminum, 36 inA metal-framed sweep whose seal is cored with steel wool fill fabric — the only pick here built for gnawing rather than just for draft.	Rodent exclusion specifically	Sized to the door; the seal must contact the threshold along its full width	$62.50 · CHECK ON AMAZON
2	Frost King A79WHA Premium Aluminum and Reinforced Rubber Door Sweep, 2 x 36 in, WhiteA screw-on aluminum carrier with a reinforced rubber blade — the version of this part that survives a winter of a storm door slamming into it.	Exterior doors, screw-mounted	Roughly 1/4 in to 3/4 in	CHECK PRICE
3	Frost King B59/36H Premium Aluminum and Vinyl Door Sweep, 2-PackA vinyl blade on a slim aluminum carrier — quieter and tidier than rubber on a door that already sits close to the sill.	Narrow gaps on a flat sill	Roughly 1/8 in to 1/2 in	$25.60 · CHECK ON AMAZON
4	Frost King Matte White Aluminum Door SweepThe same aluminum-and-blade idea in a matte white finish, for the very common case of a white exterior door where brushed metal would shout.	White doors	Roughly 1/4 in to 5/8 in	$13.61 · CHECK ON AMAZON
5	Suptikes Door Draft Stopper Under Door SweepA silicone blade on a strong adhesive strip — the sweep you use when drilling the door is not an option.	Renters and no-drill installs	Roughly 1/8 in to 1 in	$7.98 · CHECK ON AMAZON

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1

Rodent exclusion specifically

Xcluder Versa-Line Door Sweep, Mill Aluminum, 36 in

Published gap range

Sized to the door; the seal must contact the threshold along its full width

$62.50 · CHECK ON AMAZON

#ad · how we are funded · price as of October 17, 2026

A metal-framed sweep whose seal is cored with steel wool fill fabric — the only pick here built for gnawing rather than just for draft.

Where the number comes fromXcluder publishes the construction (a weather seal lined with its fill fabric) rather than a numeric working gap range. Treat it like any face-mount sweep: it closes the gap the carrier can be dropped into. Sizes are sold by door width, so measure the door, not the gap, when choosing length.

Seal core

Xcluder fill fabric (stainless steel wool + poly fibers)

Frame

Metal

Mounting

Screws

Maker's claim

"A barrier impenetrable to rodents and other pests"

Also does

Weather sealing, per the maker

Mounting

Screws through the door face

What it does well

• +The seal is cored with steel wool, which is the material the exclusion guidance actually names
• +Metal frame, so the carrier itself is not a chew target
• +Does the draft job and the exclusion job with one part

Where it fails

• -Costs several times what a plain aluminum-and-rubber sweep costs
• -"Impenetrable" is the manufacturer's word, not a measured result, and we have not tested it
• -Still only seals the bottom — the corners and the frame sides are a separate job

Who this is forAnyone who has actually seen a mouse, rather than someone who just wants the cold air stopped.

• Source: Xcluder — published door sweep and garage seal construction (fill fabric core)
• Source: Xcluder — "standard vinyl or rubber door sweeps fail because rodents can easily chew through them"

2

Exterior doors, screw-mounted

Frost King A79WHA Premium Aluminum and Reinforced Rubber Door Sweep, 2 x 36 in, White

Published gap range

Roughly 1/4 in to 3/4 in

CHECK PRICE

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A screw-on aluminum carrier with a reinforced rubber blade — the version of this part that survives a winter of a storm door slamming into it.

Where the number comes fromFrost King does not publish a numeric working range for this sweep. The 2-inch face and the rubber blade's projection put it in the quarter-inch-to-three-quarter-inch band once mounted; the blade must touch the threshold under light compression, not bend flat. Measure before you buy.

Carrier

Aluminum

Blade

Reinforced rubber

Published size

2" x 36"

Mounting

Screws (supplied)

Maker's claim

Lifetime guarantee on weathersealing ability

Mounting

Screws through the door face, above the threshold

What it does well

• +Screws, not adhesive — nothing to peel off in July
• +Cuts down with a hacksaw for a narrower door
• +The rubber blade is replaceable in practice; the carrier is what lasts

Where it fails

• -You are drilling into the door face — renters should look at an adhesive or slide-on option
• -No published gap range, so measuring first is not optional
• -The matte white profile vanishes on white trim and stands out on a stained or dark door

Who this is forAn exterior door you own, with a gap you can see daylight through and a threshold that is basically flat.

• Source: Amazon listing — published material, 2 in x 36 in size and white finish
• Source: Frost King — door sweeps, bottoms and thresholds category

3

Narrow gaps on a flat sill

Frost King B59/36H Premium Aluminum and Vinyl Door Sweep, 2-Pack

Published gap range

Roughly 1/8 in to 1/2 in

$25.60 · CHECK ON AMAZON

#ad · how we are funded · price as of October 17, 2026

A vinyl blade on a slim aluminum carrier — quieter and tidier than rubber on a door that already sits close to the sill.

Where the number comes fromPublished as 1-5/8 in x 36 in with no stated gap range. The short face and soft vinyl blade suit a small gap; on a large one the blade will not reach without hanging the carrier below the door edge.

Carrier

Aluminum

Blade

Vinyl

Published size

1-5/8" x 36"

Finish

Brown

Mounting

Screws

Mounting

Screws through the door face

What it does well

• +Slim profile reads as trim rather than as hardware
• +Vinyl is quieter across a tile threshold than rubber
• +Brown finish disappears on a stained door

Where it fails

• -Vinyl hardens in deep cold and seals worse than rubber or silicone below freezing
• -Very little reach — useless on a large gap
• -No published gap range
• -Sold as a two-pack, so the price shown covers two sweeps

Who this is forA door with a small, even gap where you want the fix to be invisible.

• Source: Amazon listing — aluminum and vinyl, 1-5/8 in x 36 in

4

White doors

Frost King Matte White Aluminum Door Sweep

Published gap range

Roughly 1/4 in to 5/8 in

$13.61 · CHECK ON AMAZON

#ad · how we are funded · price as of October 17, 2026

The same aluminum-and-blade idea in a matte white finish, for the very common case of a white exterior door where brushed metal would shout.

Where the number comes fromFrost King publishes the finish and the aluminum construction but no numeric working range. Treat it as a standard face-mount sweep: it closes the gap the carrier can be dropped into, and no more.

Carrier

Aluminum, matte white

Mounting

Screws

Trim

Hacksaw to width

Finish

Matte white

Use

Exterior or interior

Mounting

Screws through the door face

What it does well

• +Matte white sits flat against a white door instead of glinting
• +Aluminum carrier survives outdoor exposure
• +Cuts to width like every other Frost King carrier

Where it fails

• -No published gap range
• -White shows dirt at floor level faster than brown or bronze
• -Still a drilled install

Who this is forA white exterior or garage-access door where you care what the fix looks like.

• Source: Amazon listing — matte white aluminum door sweep

5

Renters and no-drill installs

Suptikes Door Draft Stopper Under Door Sweep

Published gap range

Roughly 1/8 in to 1 in

$7.98 · CHECK ON AMAZON

#ad · how we are funded · price as of October 17, 2026

A silicone blade on a strong adhesive strip — the sweep you use when drilling the door is not an option.

Where the number comes fromThe seller publishes 2" W x 39" L and no numeric gap range. The blade is trimmed to your gap on install, which is where the flexibility comes from: too little and it drags, too much and it does nothing.

Blade

Silicone

Published size

2" W x 39" L

Mounting

Adhesive, no drilling

Trim

Cut to door width with scissors

Doors

Exterior and interior

Mounting

Self-adhesive strip on the inside face of the door

What it does well

• +No holes, so no deposit argument at move-out
• +Silicone stays flexible far below freezing where cheap vinyl stiffens
• +Trims to width in one cut

Where it fails

• -Adhesive needs a clean, smooth, dry surface — it will not hold on a textured or freshly painted door
• -A door that gets kicked open will peel it eventually
• -No published gap range; you are sizing it by eye against your own gap

Who this is forRenters, and anyone who wants the draft gone tonight without a drill.

• Source: Amazon listing — published 2" W x 39" L, adhesive mounting

Complete the kit

The parts that decide whether the seal you just bought actually holds. Skip these and you will be doing the job again in March.

The corners a sweep cannot reach

Xcluder Rodent Control Fill Fabric, Large DIY Kit

Stainless steel wool blended with poly fiber, pushed into the gaps at the door corners that every sweep leaves open.

$22.63 · CHECK ON AMAZON

Deep gaps before caulking

Frost King C21CP-C Caulk Saver Backer Rod, 3/8 in x 350 ft

Backer rod: the foam you push into a deep gap so the caulk over it is a seal rather than a bottomless hole.

$34.98 · CHECK ON AMAZON

Removing old weatherstrip adhesive

Goo Gone Pro-Power Adhesive Remover Spray, 16 fl oz, with Scraper

The step everybody skips: the new tape will not stick to the residue the old tape left behind.

$19.99 · CHECK ON AMAZON

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The corners are where this goes wrong

Fit any sweep, close the door, and look at the bottom two corners from inside with the lights off. On a great many doors there is still a visible triangle of daylight where the sweep's straight edge meets the frame's vertical line. It is small, it is easy to dismiss, and at a quarter inch it is a door.

• Push fill fabric into each corner before you decide the job is done. This is the single highest-value five minutes on the page.
• Caulk over it in any corner where it could be pulled back out from the outside.
• Check the strike side of the frame too. A door that has dropped on its hinges opens a wedge down the latch side, and weather stripping closes that.
• Do the garage while you are at it. The gap under a garage door is the largest opening on most houses, and the same 1/4 inch logic applies — see garage door bottom seals.

Timing, and why this page belongs on a draft site

UC IPM notes that where outdoor populations exist, house mice frequently enter homes in autumn, when nighttime temperatures start dropping. That is the same week you notice the draft. The cold and the mouse are arriving through the same opening for the same reason, which is why sealing it once, properly, does both jobs.

If the draft is what actually brought you here and the mouse is hypothetical, buy the good draft sweep and skip the specialist part. We would rather tell you that than sell you the expensive option you do not need.