Box-Kat

Mouse Barrier for Campers & Vans

A reusable, non-toxic perimeter that physically blocks mice from your parked vehicle. Sets up in about 30 minutes.

10’ × 25’ enclosed perimeter — ideal for most campers, vans, and travel trailers
14" tall — too high for house mice to jump
Patented flex panels seal to gravel, dirt, & cracked concrete
No sprays, traps, or poison — set it once and leave it

$374.00 USD

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Shipping calculated at checkout.

Surrounds the Vehicle
Seals to the Ground
Blocks Mice Access

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Not sure this is the right kit?

Choose the size that matches your vehicle. Most vans, campers, and similar mid-size setups fit the Campers & Vans kit.

Cars, SUVs & Trucks 10' × 15' · $249

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Campers & Vans 10' × 25' · $374

RVs & Motorhomes 10' × 40' · $499

Expansion Kit Add more coverage

NON TOXIC

Safe around kids and pets

14" TALL

Higher than mice can jump

INDOOR + OUTDOOR

Garage, driveway, gravel pad

30-MIN SETUP

No tools required

WHAT'S IN THE BOX?

14 white panels (5 ft. each) — to form the 10' x 25' enclosure
Patented black flex connectors — shape to uneven ground
Push-in fender clips — tool-free assembly
Wing-nut quick-access screws — for daily drivers
Acrylic braces — added stability for outdoor setups
Step-by-step instructions

Anchoring (sandbags, stakes) sold separately

FULL ASSEMBLY INSTRUCTIONS

Why Box-Kat Works When Traditional Deterrents Fall Short

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Feature	Box-Kat	Sprays & Scents	Audio Deterrents	Traps	Poison
Physical barrier around the vehicle	Yes	No	No	No	No
Helps block access before damage starts	Yes	Limited	Limited	No	No
Safe, non-toxic solution	Yes	Usually	Yes	Yes	No
Useful for long-term storage	Yes	Limited	Limited	Limited	Limited
No ongoing reapplication, power source, or rebaiting	Yes	No	No	No	No
Cleaner, lower-mess solution	Yes	Usually	Usually	Limited	No

Traditional deterrents can still play a supporting role, but Box-Kat is designed to address the access problem directly with a physical barrier around the vehicle itself.

Mice failing to climb over Box-Kat panel walls

PROVEN IN TESTING

We put 50 mice inside a Box-Kat and watched what happened.

None of them chewed through, climbed over, or squeezed under the Box-Kat. After 90 minutes, 80 percent of the mice had given up, piled into a corner, and gone to sleep. The 14" wall is taller than a house mouse can jump. The patented panel material isn't edible. The flex panels seal tight to the ground.

It's not a deterrent. It's a barrier.

mice placed inside a sealed Box-Kat enclosure

chewed through, climbed over, or squeezed under

80%

gave up and went to sleep within 90 minutes

$1,000s

saved in potential rodent damage for our customers

$249 once, or $1,000+ in repairs?

A single chewed wiring harness can run several thousand dollars to diagnose, reach, and repair. The Box-Kat is a one-time cost that pays for itself the first time it prevents a single rodent incident.

TRY OUR RODENT DAMAGE COST CALCULATOR

After 25 years of fighting mice, our founder built the solution himself.

Tom Sharp designed the first Box-Kat prototype in 2017 after losing the battle with rodent damage one too many times. Today, Box-Kat is the only patented mouse barrier of its kind — built, tested, and refined with seven years of customer feedback.

LEARN MORE

Kit specifications

Enclosure size 10 ft. × 25 ft.

Coverage area 250 sq. ft.

Panel height 14"

Panel material High-density plastic

Connectors Patented black flex panels

Setup time ~30 minutes, no tools

Use Indoor or outdoor

Best for

Vehicle types Campers, Vans, trailers, smaller RVs

Ideal storage surfaces

Garages Driveways Gravel pads Covered parking Storage lots Winter setups

Design Patented flex-panel technology

Safety Non-toxic, pet & family safe

Weather Weather-resistant materials

FREQUENTLY ASKED QUESTIONS

Can mice chew through the Box-Kat?

Mice are always on the hunt for food or a cozy place to nest. The Box-Kat's durable plastic construction is neither edible nor easily chewable, deterring mice and other small rodents from trying to break through. When mice encounter the Box-Kat, they instinctively search for openings, a way over, or a path underneath. Finding none, they quickly move on in search of easier targets.

During testing, we placed 50 mice inside a Box-Kat enclosure. Not only did they fail to chew through the panels, but after 90 minutes, 80 percent of the mice gave up, piled into a corner, and went to sleep. The Box-Kat is proven to be a simple, humane solution to mice intrusion.

Will mice jump over or go under the Box-Kat?

The Box-Kat stands two inches taller than the highest jump of a house mouse, making it impossible for them to leap over. Its flexible design ensures a snug fit to the ground, leaving little to no gaps for mice to crawl underneath.

Does the Box-Kat protect against other rodents?

Box-Kat is specifically designed to thwart house mice — the most frequent cause of vehicle rodent damage — and is extremely effective. Its height and panel texture are engineered to stop them from leaping over, burrowing under, climbing up, or chewing through.

It may also deter larger rodents such as rats or squirrels, but effectiveness can vary depending on their size and behavior.

For best results, make sure your setup is as level as possible and panels are securely clipped together.

Does the Box-Kat work on uneven surfaces?

Yes — that's exactly what it's designed for.

Thanks to our patented flex-panel technology, Box-Kat can mold to the shape of your driveway, garage, or parking pad — including areas with cracks, dips, gravel, or slight slopes.

The panels flex and settle naturally into surface contours, forming a continuous barrier that keeps rodents out, even when the ground isn't perfectly flat.

Just make sure to clear any tall grass or large debris, and anchor as needed for outdoor setups.

Can the Box-Kat be used outdoors?

Yes! Box-Kat is built for indoor or outdoor use — but the elements can be a factor.

To keep your barrier securely in place, we recommend using an anchoring system such as:

Water jugs, sandbags, or cinder blocks for hard surfaces
Garden stakes for soil or grass setups

Make sure the ground is as flat as possible and clear of tall grass or debris. Proper prep = better performance.

(See our Assembly Instructions for a full setup guide.)

How do you set up the Box-Kat?

The Box-Kat is designed for effortless assembly. Each of the white panels and black connectors connects seamlessly using push-in fender clips to ensure a secure, rodent-proof seal.

Be sure to view our Assembly Instructions page.

Will the Box-Kat withstand weather conditions?

The Box-Kat is crafted from high-quality, durable plastic materials, ensuring reliable performance and long-lasting protection. However, like any product, it may experience normal wear and tear over time. Exposure to extreme temperature fluctuations, UV rays, moisture, and wind can gradually impact its condition. Regular care and proper setup will help maximize its lifespan and effectiveness.

What is the return policy?

We accept returns within 30 days of delivery, provided the product is unopened or in like-new condition. To be eligible, the item must be undamaged and returned in its original packaging.

More information can be found on our Shipping & Returns page.

Do you ship outside the U.S.?

We ship to both the United States and Canada. For Canadian orders, any import duties or fees are the responsibility of the customer. If you're located outside the U.S. and Canada and would like to order, reach out to us directly and we'll do our best to help.

Mouse Barrier for Campers & Vans