In This Guide If You Want All the Bells and Whistles Whisker Litter-Robot 5 Pro Jump to review Best for Most People (and Cats) Whisker Litter-Robot 5 Jump to review Best Affordable Model Whisker Litter-Robot EVO Jump to review A Model That Refills Litter for You Whisker Litter-Robot 4 Jump to review As the pet tech writer here on the Reviews team at WIRED, I have a lot of opinions about which automatic litter box you should get. I've tested nearly 20 models, but I still go back to one of the first models my cats ever used, the  Litter-Robot 4 . Among all the brands I've tested, Whisker's connected phone app is leagues above the rest. The app design is clean, easy to use and understand, allows you the ability to monitor usage and control settings while away, and keeps you connected to your cat's important health metrics. In fall 2025, Litter-Robot released a whole new line of upgraded automatic litter boxes , and we have tested them all.…