OneIsAll Ease S1 Self-Cleaning Cat Litter Box Review

I like to joke that my favorite family member is my cat, Tiger. He's far less moody than my two teenagers; I don't have to drive him anywhere, and when he interrupts my work meetings, it's adorable instead of annoying. The one downside? Cleaning his litter box. So when I heard about the OneIsAll Ease Self-Cleaning Litter Box (available at Amazon for $199.99) , I was intrigued. In fact, it seemed so cool that we honored it with a 2026 Reviewed CES Award back in January when we saw it on the show floor. In practice, could this gadget finally put an end to family arguments over whose turn it was to scoop Tiger's box? I tried it to find out.

About the OneIsAll Ease Self-Cleaning Litter Box

• Dimensions: 22.05 x 23.03 x 21.97 inches
• Weight Capacity: For cats 2.6 to 30 pounds
• Waste Capacity: Holds up to 14 days of waste for one cat
• Cleaning Cycle: Automatically sifts waste 5 minutes after your cat exits the box
• Compatible Litter: Works with most clumping mineral/bentonite litters; optional insert available for tofu and mixed litters.

If you have a traditional litter box, you already know the downsides: the scooping, the mess, and the overall ick factor. The OneIsAll Ease Self-Cleaning Litter Box is designed to eliminate all three. After your cat finishes their business, the box automatically sifts the soiled litter into a lower waste compartment, leaving clean litter behind for the next visit. It also includes a litter mat to help catch stray litter from your cat's paws. If you've always wanted the companionship of a cat without feeling like their full-time sanitation department, the OneIsAll promises to make life easier.

How we tested

The OneIsAll Self-Cleaning Litter Box needed some assembly when it arrived, but the instructions were clear, and putting it together took only a few minutes. Once I had it all set up, I placed the OneIsAll in our laundry room, one of the spots where we keep Tiger's litter box. The box needs to be plugged into an outlet for the self-cleaning mechanism to work. Unfortunately, when we remodeled our house, I somehow neglected to put outlets in both the laundry room and the mudroom. That meant running an extension cord through the powder room just to power the litter box. Learn from my mistakes.

The instructions recommend gradually introducing your cat by mixing some of their existing litter into the new box over several days. In theory, your cat becomes familiar with the new setup and eventually makes the switch. Unfortunately, Tiger never took to the OneIsAll; he simply refused to use it. I even took away his other litter box in the hope it would motivate him to step (literally) into his new throne, but all he did was register his protest—by peeing on the bathroom mat. Hoping Tiger was simply being his stubborn self, I asked a friend to try it with her cat. Unfortunately, her cat also refused to use it. The litter box ultimately landed in a home with three cats, where it finally found more success.

Given that cats are perhaps the world's most fickle creatures, we judged this product based on whether the human operator (me) liked it.

What we like

It's self-cleaning

Scooping a litter box ranks somewhere between cleaning the shower drain and unclogging a sink on my list of household chores. The OneIsAll automates that process, collecting waste in a separate drawer that you simply empty when it's full. While I couldn't convince Tiger to use it, I tested the cleaning mechanism with his used litter, and it worked exactly as advertised. It's definitely a more pleasant experience than wielding a plastic litter scoop.

It's easy to clean

Because the box collects dirty litter in a separate drawer, emptying the waste is simple. Just slide out the tray, dump the contents into the trash, and you're done. When it's time for a deeper clean, the plastic components are easy to wash with soap and water in a sink.

What we don't like

It's huge

This litter box is a beast, so it's not something that you can easily tuck into an existing cabinet where your standard-sized box fits. It's sizable—22.05 inches long by 23.03 inches wide by 21.97 inches high—so it's going to be noticeable wherever you put it.

It sits high off the ground

I'm no cat behaviorist, but I suspect the height played a role in why Tiger—and my friend's cat—refused to use it.

Because the OneIsAll has a separate compartment underneath to collect waste, its entrance sits much higher than that of a traditional litter box. This means it is literally and figuratively a big step for cats that are used to walking into a box that's nearly flush with the floor. It is also a challenge for senior cats with arthritis or young kittens—although OneIsAll offers a version of the Ease S1 that comes with a step to ease entry. It costs about $40 more.

Tiger's preferred litter box sits directly on the ground, and he never seemed convinced that the extra climb was worth the effort.

Warranty

The OneIsAll Ease Self-Cleaning Litter Box comes with a two-year limited warranty. The company also offers a 30-day money-back guarantee.

Should you buy the OneIsAll Ease Self-Cleaning Litter Box?

Maybe. If you have a change-embracing cat that isn't a senior, and/or you find it hard to clean the box on the daily

If there's one universal truth about cats, it's that they excel at being unpredictable. One cat's favorite gadget is another cat's sworn enemy.

That was certainly my experience. Tiger flat-out refused to use the OneIsAll Ease S1 (available at Amazon for $199.99) . But after the box found a home with three cats, two of them happily adopted it without issue.

If your cat tends to embrace change and you love the idea of dramatically reducing litter box maintenance, the OneIsAll is a worthwhile upgrade. It cleans as advertised, which means you don't have to. If, however, your cat is the type who protests even the slightest change in routine (looking at you, Tiger), be prepared for the possibility that this expensive gadget may not win them over.