My cats and I tested the Litter-Robot 4 and Litter-Robot 3 Connect automatic litter boxes. Here's how the two bestsellers compare.

These automatic litter boxes have given me a lot of my time ... I loved the effortless assembly (it came pre-assembled), the easy control panel with five very responsive buttons and the intuitive ...

If you decide you don’t want to use it, you can always turn it off and operate the litter box manually from its control panel. All self-cleaning litter boxes make some noise—they are ...