Which Automatic Litter Box Is Best? We Tested Litter-Robot’s Lineup

As a pet tech writer on the Reviews team at WIRED, I've tested nearly 20 automatic litter box models, but I still swear by one of the first my cats ever used: the Litter-Robot 4. Among all the brands I've tested, Whisker's connected phone app stands out for its clean design, ease of use, and valuable insights into my cat's health metrics. In fall 2025, Litter-Robot released a new line of upgraded automatic litter boxes, which I've had the chance to test.

The lineup includes the technologically advanced Litter-Robot 5 Pro, with dual cameras and AI-powered insights, and the more compact Litter-Robot EVO. All models are available in black or white, although it's worth noting that black models may show litter dust if kept in an enclosed area. The Litter-Robot 5 Pro is the crème de la crème of automatic litter boxes.

With dual AI-enabled cameras, it can recognize up to five cats and track their individual usage habits. The WasteID technology takes it a step further by determining the type of visit your cat had based on weight. If you have multiple cats, I recommend subscribing to Whisker+ ($80/year) to unlock this feature and enable the system to differentiate among them.

The connected app provides valuable insights into your cat's health and habits, charting trends over time to help you identify any potential issues. The 5 Pro also features a more tightly sealed and larger drawer, with up to 10 days of waste storage per cat. The new touchscreen interface and wider, shallower drawer make manual control and waste removal a breeze.

For those who don't need the advanced features of the 5 Pro, the Litter-Robot 5 is a great alternative. It boasts WasteID technology, easier assembly and waste removal, and a new LCD control panel. While it doesn't have an AI-enabled camera, it uses a built-in scale to determine which cat is using the box.

The 5 model works for up to five cats and provides insights into their usage habits and weight changes through the connected app. When ordering from Whisker directly, you get a 90-day in-home trial, one-year warranty, free shipping, and HSA/FSA eligibility, making it a hassle-free purchase.