Unless you've been living under a rock, you've probably heard about Whisker's Litter-Robot by now. If you haven't, it's a self-cleaning litter box that scoops your cat's poop for you, saving you from ...

Whisker has refined the Litter-Robot 4's design to address issues from previous generations, such as leaks and jamming. That said, this version occasionally cycles without a cat entering, and when ...