The greatest invention in pet tech in recent years is the litter robot. A machine that scoops your kitty's waste so you don't have to — what else could a cat owner possibly want? How about insights into kitty's litter box usage that could flag health issues? Whisker's Litter-Robot 5 Pro promises all that and more, using a dual camera system, sensors, and AI algorithms to identify each cat and classify the waste it leaves behind. Unfortunately, after six months with the $899 device, the AI features repeatedly failed with two cats that don't look anything alike.

What is the Litter-Robot 5 Pro?

The Litter-Robot 5 Pro is the highest-end model from Whisker, the company that popularized the motorized self-scooping litter box. It launches alongside the Litter-Robot 5, the midrange Litter-Robot 4, and the budget Litter-Robot Evo. All four work on the same basic idea: a large globe filled with litter rotates after a cat leaves, sifting clumps into a sealed drawer below. The Pro version adds a front-facing camera, an interior camera, extra sensors, and a WasteID system that claims to distinguish between urine and feces.

At $899, the Pro is $100 more than the standard Litter-Robot 5 and $200 more than the Litter-Robot 4. The Evo costs $599. Whisker also sells a $29 RFID PetTag that helps identify cats, and the most interesting AI features require a Whisker Plus subscription at $8 a month.

The scooping basics still work

As a pooper-scooper, the 5 Pro is superb. The large globe gives even big cats room to move, the cycle is quiet, and the sealed bin contains smells much better than an open tray. The onboard LCD screen clearly communicates status, a step up from the confusing LED lights on older models. The accompanying app lets you trigger manual cycles, check litter levels, view waste drawer level, and see recorded video clips from the front camera. You can also monitor your cat's weight through the built-in scale, so you never need to wrestle the cat onto a bathroom scale.

The machine is big, though. It stands almost 30 inches tall and takes up as much room as a side table. It needs a nearby outlet. In a small laundry room, the footprint dominated the space. But it's quiet enough to live in a bedroom, and it's far easier than scooping twice a day. With a litter robot, I empty the drawer about once a week instead of cleaning the box constantly. That convenience alone justified the device for many owners, including me.

WasteID fails more than it succeeds

The main appeal of spending extra on the Pro is its AI features. The WasteID system is supposed to use sensors and camera data to determine whether a cat urinated or defecated, log the weight of each deposit, and prioritize removing solid waste to reduce odor. In testing, WasteID repeatedly misidentified waste, told me both cats had produced the same type, and often couldn't provide any deposit weight at all.

Whisker initially said the gas sensor on my unit was off and attempted to fix it remotely. When that didn't improve things, the company concluded the scale calibration was also off. That would have required shipping a whole replacement unit. Even with regular updates, the system didn't deliver a single actionable health insight. For a health-focused feature, false data is dangerous: a robot guessing your cat's elimination habits could cause unnecessary worry or miss a real problem.

Cat ID got my cats confused

The bigger letdown was Cat ID, Whisker's facial recognition system. The front camera is supposed to recognize which cat enters and assign the visit to that cat in app history. It claims to support up to five cats. My two cats couldn't be more different: one is a large gray-and-white tabby, and the other is a sleek black-and-white tuxedo. The robot mixed them up anyway.

After a week or so, the app presents a PawPrint setup. It shows you images captured by the camera and asks you to pick the best ones for each cat. The images offered were mostly bad—blurry, poorly lit, or with the cat's face cut off. There was no way to upload my own photos. Whisker says the system was designed to learn and improve over time, but six months later it hadn't. It also confused the weight data. My 13.4-pound cat suddenly registered as 11.5 pounds, because the robot assigned his visit to his younger, lighter brother. The scale then continued logging both cats at the same wrong weight. Resetting profiles, reassigning visits, and correcting video logs was a huge chore for a product that promised to save time.

There is an optional $29 RFID PetTag that Whisker sells for cats that look similar. But a $900 machine with facial recognition shouldn't need a wearable to tell apart two cats with completely different markings. In late 2025, this kind of identification should be standard.

Camera privacy is a double-edged sword

Having a camera inside your pet's bathroom is inherently strange, but many cat owners want to see what's going on. The Litter-Robot 4 even has a camera mount accessory for that reason. On the 5 Pro, the front-facing camera records every cat visit, and you can watch live video from the interior camera. However, Whisker doesn't let you record or replay those interior views, even with the subscription. The company says "poop-view" is coming soon, but today the interior camera is only a live feed, which makes catching a cat in the act extremely difficult.

There's a bigger privacy issue. Placing the robot near a bathroom can cause the front camera to record people too, because cats like to accompany their humans. There's an option to record only when the camera spots a cat, but it's not perfect. Be very careful where you place this device.

Patterns arrives late

Whisker has added a new feature called Patterns in recent months. It summarizes each cat's day: weight, visit frequency, and total time spent in the litter box. It's a step toward useful insights, but it still lacks waste-type details. It also relies on the same inaccurate weight data. Until those sensors are calibrated and the firmware fixes sink in, Patterns isn't trustworthy enough to catch early signs of illness.

Worse, the feature arrived several months after the Pro launched. That means early adopters paid for a subscription while core features didn't work. As with any internet-connected device, it's possible software updates will eventually make the 5 Pro deliver what Whisker promised at launch. But buyers should not rely on that possibility.

Which litter robot should you buy?

If you want a self-scooping litter box, the Litter-Robot 5 Pro gets the job done. It's quiet, convenient, and handles more and larger cats than the older models. If you need the camera for safety, or you have a very large cat or five cats, the Pro's core hardware is fine. But if you don't need AI identification, save $100 and get the standard Litter-Robot 5; it keeps the bigger globe and WasteID while dropping the camera and facial recognition.

The Litter-Robot 4 at $699 is still the sweet spot. It does exactly what a litter robot should do without AI gimmicks. The cheaper Evo at $599 is more compact, but it feels flimsier, has a smaller bin, no litter-level monitoring, no night light, and doesn't support Whisker's hopper accessory. It also threw frequent errors about phantom bonnet detachments in my testing. The LR4's extra $100 buys better build quality and a more reliable overall package.

Whisker has made a genuinely useful product, but the company put too much faith in what AI could do. In a real home, with real lighting, real cat behavior, and two cats that refuse to sit still for a portrait, the AI simply isn't ready. Whisker says the system is designed to learn, and maybe it will. But readers know the golden rule of tech: never buy a product based on promised future updates. Today, the Litter-Robot 5 Pro is an excellent pooper-scooper wrapped in an AI feature set that doesn't earn its premium.

Source: The Verge News