Published Nov 3, 2026
Amy Brown-Towry / Cats.com
The Happypaw XXXL stands out for one big reason: it’s an extra‑large, open‑top automatic litter box built specifically for big cats and multi‑cat homes. Instead of using a rotating drum like many self-cleaning models, the Happypaw uses a rake-based system that moves waste into a sealed drawer, helping keep odors down and daily scooping to a minimum.
Ratings
- Ease of Cleaning – 3.8/5
- Odor Control – 4.6/5
- Appearance – 4.3/5
- Construction – 3.9/5
- Price – 4/5
Overall Score: 4.1/5
It’s a simple, straightforward design that uses standard clumping litter and has a roomy layout, which many cats may find appealing. But does it actually make life easier, and is it worth the roughly $300 price tag?
In this review, we break down how the Happypaw works, what our cats thought of it, and whether it’s a good fit for homes that need a spacious, low‑maintenance litter box.
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Amy Brown-Towry / Cats.com
Amy Brown-Towry / Cats.com
Amy Brown-Towry / Cats.com
Amy Brown-Towry / Cats.com
At Cats.com, we focus on honest, experience‑based reviews that reflect how products perform in real homes with real cats. Our team looks past marketing claims and evaluates usability, comfort, and day‑to‑day practicality.
For this review of the Happypaw Open‑Top Automatic Self‑Cleaning Litter Box, we tested the unit in a multi‑cat household and observed how easily the cats adapted to the open design, how smoothly the cleaning cycle worked, and how effectively it managed odor, litter tracking, and overall maintenance. We also evaluated noise level, app performance, and ease of use to understand how the Happypaw fits into everyday life with cats.
Happypaw XXXL Automatic Self‑Cleaning Litter Box Overview
The Happypaw XXXL is a newer contender in the automatic litter box market, offering an open‑top design, extra‑large interior space, and thoughtful safety features that make daily litter care feel more manageable. With its wide 55 × 42 cm entrance and low entry, the Happypaw provides a comfortable, accessible option for large breeds, senior cats, and pets with limited mobility who prefer open, non‑enclosed spaces.
The Happypaw uses an automatic cleaning system that sifts waste after each use and deposits it into a sealed 12‑liter waste bin capable of holding up to twenty days of waste for a single cat. It works with most clumping litters, with mineral and bentonite formulas recommended, so there’s no need for proprietary refills. The non‑stick waterproof tray helps reduce buildup, and the included liners and modular interior make cleaning simple. While occasional wiping may be needed to remove stuck litter, overall maintenance remains minimal.
Infrared sensors and an anti-pinch mechanism help detect your cat’s presence and pause the cleaning cycle, reducing the risk of injury while using the box. The unit operates quietly and connects to a 2.4 GHz Wi‑Fi app that provides remote control, usage tracking, and health insights. With its combination of automatic cleaning, strong odor-control features, and a spacious layout large enough for even Maine Coons and other large cats, the Happypaw XXXL is a practical solution for single- or multi-cat homes.
Happypaw XXXL Automatic Self‑Cleaning Litter Box Features
| Feature | Details |
| Footprint | 17″ L x 26″ W x 21″ H |
| Inside Space | Extra‑large open interior (55 × 42 cm entrance) |
| Entryway Size | Low‑entry front opening for seniors & mobility‑limited cats |
| Waste Drawer Capacity | Up to 20 days (single cat) / 12 liters |
| Unit Weight | Approx. 24 lb |
| Minimum Cat Age/Size | For cats 6+ months old and at least 15 cm tall |
| Maximum Cat Size | Suitable for large breeds (Maine Coon, Ragdoll) |
| Sifting System | Automatic waste‑separation cycle with open‑top design |
| Safety Features | Infrared sensors, anti‑pinch protection, auto‑pause during use |
| Odor Control System | Triple‑lock odor control: non‑stick tray, odor eliminator, sealed waste bin |
| Noise Level | Quiet operation (manufacturer does not list exact dB) |
| App | Yes, app via 2.4 GHz Wi-Fi (cleaning controls, usage tracking, and health-related alerts) |
The manufacturer recommends placing the litter box on a hard, level surface and keeping automatic cleaning turned off for kittens under six months old or shorter than 15 cm.
Amy Brown-Towry / Cats.com
Amy Brown-Towry / Cats.com
Amy Brown-Towry / Cats.com
The Happypaw XXXL Automatic Self‑Cleaning Litter Box is built for cat parents who want a cleaner routine with minimal daily effort. Its wide, open-top design and low entry make it easy for cats to use, especially large breeds, seniors, and mobility‑limited pets who prefer open spaces over enclosed drums. The automated cleaning system separates waste after each use and deposits it into a sealed twelve-liter drawer, helping contain odors and reduce daily scooping.
The extra‑large interior is well‑suited for multi‑cat and large cat households, and the waste drawer can last up to twenty days for a single cat. It works with most clumping litters, though mineral and bentonite formulas perform best. The non‑stick waterproof tray helps reduce buildup, and the included liners support easier deep cleaning. While the interior may need an occasional wipe to remove stuck litter, overall maintenance remains low. The unit itself is quite large, however, and takes up more space than many automatic litter boxes. The waste‑bin liners can also feel awkward to change, especially when the drawer is full.
Safety features include infrared sensors and an anti‑pinch mechanism that pauses the cleaning cycle when a cat approaches, helping cautious cats feel secure. The unit operates fairly quietly and is best placed in a dry indoor area away from moisture or high‑traffic zones.
The Happypaw connects to an app via 2.4 GHz Wi-Fi, offering remote cleaning control, usage logs, and basic health insights. While the app is simpler than those used by premium competitors, it still provides helpful day‑to‑day monitoring.
Although its footprint is larger than a traditional litter box and the waste‑bag changes can be a bit cumbersome, the combination of app control, quiet performance, and reliable automation makes the Happypaw XXXL a practical option for cat parents seeking a larger, open‑top automatic litter box.
What We Liked:
- Works with most clumping litters
- Roomy open‑top design suitable for large breeds and multi‑cat homes
- The app offers remote cleaning control, usage logs, and basic health insights
- Responsive safety sensors and anti‑pinch protection
- Non‑stick tray and included liners for easier deep cleaning
- Decent odor‑control system with sealed waste bin
What We Didn’t Like:
- The unit is large and takes up more space than many competitors
- Waste‑bin bags can be awkward to change, especially when full
- Occasional wipe‑downs needed to remove litter that sticks to the tray
- The rake makes a noticeable clunk when resetting, which may startle some cats
- App occasionally gave incorrect notifications
- Higher price than basic automatic litter boxes
What Did Our Cats Think?
Amy Brown-Towry / Cats.com
Our experience with the Happypaw XXXL Automatic Self‑Cleaning Litter Box was positive right from the start. The box arrived with liners, odor removers, and uncomplicated instructions, making setup quick and simple. Assembly only took a few minutes, and connecting it to the app was straightforward. Both of our cats were instantly curious and approached the box right away. Because of the open-top design and wide entrance, both seemed comfortable during their first use, and our larger cat seemed to appreciate the extra space compared to enclosed models.
During testing, the cleaning cycle worked reliably, though the rake mechanism made a noticeable clunk when returning to its resting position. This sound startled our cats at first, but they adjusted after a few cycles. The safety sensors paused cleaning whenever a cat approached, which was reassuring. Odor control was effective, helping keep the box fresh between cleanings. The drawer held a few days of waste for both cats, compared with the brand’s longer estimate for single-cat households.
We did notice a couple of quirks. The interior occasionally needed a quick wipe to remove litter that stuck to the rake, and the waste‑bin liners were somewhat awkward to change, especially when the drawer was full. The app also gave a few incorrect “drawer full” alerts even when the bin was empty, which required manual resets. Aside from these issues, the automatic separation system handled clumps well.
What Do Customers Think of the Happypaw XXXL Automatic Self‑Cleaning Litter Box?
Because the Happypaw XXXL is still relatively new, it hasn’t accumulated as many reviews as long-standing automatic litter box brands. Early customer feedback is mixed, with some cat owners praising its spacious open-top design, odor control, and the convenience of its automated cleaning cycle, while others report technical issues and concerns about its size and waste capacity.
Positive Reviews
“Big enough for our 15lb baby. Looks good. Will leave another review after testing.” — by Amazon Customer on September 30, 2026
“Splurge and get this larger box.It’s working great so far for a 5 year old used to a smaller automatic box and my new 11 week old kitten. It’s high for entry so you’ll probably want steps. It took the kitten a minute to use it but once she saw the big cat in there it was no problem. The waste drawer holds a lot….” — by Wer002 on September 30, 2026
Safety note: Although this reviewer mentions an 11-week-old kitten, the manufacturer recommends using automatic cleaning only for cats at least six months old and 15 cm tall. Keep automatic cleaning disabled for younger or smaller kittens.
Negative Reviews
So this was great for like a week then started to get a E1 error and no matter what i did including removing all litter i couldnt get it to work again. I would say to stay away from this as these seem to be faulty. The concept is great. The size is awesome. Also the plastic clear sifters get stuck and doesnt always close and just hangs and you have to jiggle them to get them to close again. — by halex wade on October 21, 2026
Does a fantastic job of cleaning the litter. However, this is a litter box for a small adult. No more than I would say 8 pounds. It is NOT odor free nor can you go 20 days without emptying the tray. Probably at most one week depending on if you have a kitten or an adult cat. Yet it is making my job a lot easier and having 4 cats this does help from having to go in every day and clean.— by Laura King on October 9, 2026
Overall, Is the Happypaw XXXL a Good Choice?
The Happypaw XXXL Automatic Self‑Cleaning Litter Box offers a spacious open‑top design, strong odor control, and reliable automation at a more accessible price point than many premium competitors. At around $300 on Amazon at the time of review, it costs less than many high-end models while still providing app controls, safety sensors, and a large waste drawer that reduces daily maintenance.
Since the Happypaw is still relatively new, there aren’t many reviews yet, and a few minor quirks suggest it could use some fine-tuning. Its large size also requires more space than traditional litter boxes, and the waste‑bin liners can be awkward to change.
However, the Happypaw XXXL delivers solid performance for multi‑cat homes and large breeds, especially for those who prefer an open design over enclosed drum‑style units. For pet parents who want an automatic litter box without paying premium prices, the Happypaw offers reasonable value and a low-maintenance option.
