For this installment, we compared the viral Litter-Robot 4 against a bestselling self-cleaning Meowant litter box from Amazon. What's Worth Noting About the Litter-Robot 4 and the Meowant Litter BoxBoth self-cleaning litter boxes come with unbeatable WiFi-enabled technology that can be controlled through an app. If you follow the manuals step-by-step, both litter boxes are extremely easy to set up, taking about 20 minutes at most. There is no weight limit on the Litter-Robot 4, whereas the Meowant litter box is recommended for cats 3.3 to 18 pounds. The Meowant litter box is available to shop on Amazon, TikTok Shop, Walmart, and meowant.com.