Box-Kat car barrier around ElCamino in garage

BOX-KAT 2.0 ARRIVES THIS FALL

THE MOST ADVANCED MOUSE BARRIER YET

Box-Kat 2.0 is the only barrier built to block mice from climbing, chewing, or burrowing their way into your vehicle — with a proven, non-toxic design trusted by thousands. As temperatures drop, mice look for warm places to nest, and your car or RV is a prime target.

Don’t wait until the cold weather hits — secure your Box-Kat today and enter rodent season with peace of mind. 

PREORDER NOW FOR 15% OFF

WHAT'S NEW?

For the past seven years, we’ve been improving Box-Kat with the help of customer feedback, real-world testing, and plenty of hands-on experience. The result is Box-Kat 2.0 — stronger, simpler, and more effective than ever. It’s built with higher-quality materials, upgraded for easier setup, and designed to work for everyone. Whether you’re storing a vehicle long-term or using it every day, Box-Kat 2.0 goes together in about 30 minutes — and with a few blocks on the inner braces, it stays put in wind and weather.

Box-Kat materials and parts comparisons

FASTER SETUP WITH

PUSH-IN FENDER CLIPS

Our original system required screws to secure each panel — but now, Box-Kat 2.0 comes equipped with push-in clips that snap into place in seconds. No tools needed. This small change saves you time and hassle during setup, making rodent prevention a breeze!

Box-Kat mouse barrier panels on grass

A CLEAN, REFRESHED DESIGN WITH

IMPROVED DURABILITY

We’ve upgraded the core panel materials in Box-Kat 2.0 to be thicker, tougher, and more weather-resistant. That means less wear over time, improved resistance to the elements, and added confidence when using the barrier outdoors.

Box-Kat mouse barrier open for daily driver in garage

EASIER IN-AND-OUT ACCESS FOR

DAILY DRIVERS

New to Box-Kat 2.0: a set of wing-nut screws included with every kit, giving daily drivers a quick-access point. Just loosen the designated panel connection to open and close your setup with ease — perfect for anyone who needs to come and go regularly.

Close up of Box-Kat mouse barrier plastic base

STURDIER PLASTIC BRACES FOR

INCREASED PANEL STABILITY

The original brace design worked — but we wanted better. Version 2.0 features thicker, more rigid plastic braces with a new L-shaped base that makes anchoring easier than ever. Just place a cinder block, paving stone, or other weight on the inner leg of each brace, and your Box-Kat will stay securely in place — even in winds up to 40 mph. It’s a stronger, more stable setup you can count on.

SHIPPING THIS SEPTEMBER

Preordering your Box-Kat 2.0 is simple — and risk-free.

To reserve your kit, just place a $50 deposit today. The remaining balance will be automatically charged on September 15, shortly before your order ships. Your preorder discount will be applied automatically based on when you place your deposit — no code required. The earlier you order, the more you save.

Need to change your mind? No problem. You can cancel your preorder at any time before September 15 for a full refund, no questions asked.

Reserve now to secure your spot — only 500 kits are available this fall.

PREORDER DISCOUNTS:

  • "This is one of those ideas where it’s a very simple solution to a common problem. And it’s probably one where I’m sure there are more than a few folks asking, “Why didn’t I think of that?” Well, Tom Sharp did—and we RVers are the beneficiaries."

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FULL ASSEMBLY INSTRUCTIONS

FREQUENTLY ASKED QUESTIONS

How does it work?

Unlike traps or poisons that only deal with rodents after damage is done, Box-Kat works as a physical barrier to keep them out completely.

Its patented flex panels mold to uneven ground and prevent burrowing. Standing 14 inches tall, the Box-Kat is designed to stop mice from jumping or climbing over — providing 360° protection from the most common vehicle-invading rodents.

No chemicals. No cleanup. Just peace of mind.

Is it effective on all 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.

Can I use the Box-Kat outside?

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.)

Will it work on uneven or cracked surfaces?

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

Thanks to our patented flex-panel technology, Box-Kat 2.0 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.

Is the Box-Kat adjustable?

Each Box-Kat is constructed of 5-foot white panels attached by flexible black connectors. These can absolutely be manipulated and shaped to best suit your vehicle and storage situation.

Can I drive over the Box-Kat?

No. For repeated daily use we have supplied a pair of screws and wing nuts for ease of access.

Check out our Instructions Page for more information.

How long will my Box-Kat last?

The Box-Kat is crafted from high-quality 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 season after season.

Is there a warranty on the Box-Kat?

With proper care and limited exposure to extreme heat or UV, the Box-Kat is designed to last between 5 to 10 years. For added assurance, we offer a materials warranty of five years for indoor use and two years for outdoor use.

While the Box-Kat delivers highly effective mouse protection, its performance relies on proper setup and routine maintenance. External factors such as wind, pets, or children can disturb the barrier, so occasional inspections are recommended to ensure it remains secure. If wind gusts reach 40mph, extra precautions anchoring the Box-Kat — including taking it down — may be necessary. A flying Box-Kat may not be useful again and can damage vehicles.

With a little vigilance, the Box-Kat offers reliable, long-lasting protection for your vehicle and property.

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.

Return shipping costs are the responsibility of the customer. Refunds will be issued once the item has been received and inspected.