Here are some of the next gen features that make this high-tech pet gadget ... racket every time he uses the litter box, I would have no idea the Litter Robot 4 was doing its job.

To make our robot, we are going to reuse things that we find around the house that we would otherwise recycle. You need a big cardboard box for the body, a smaller cardboard box for the head ...

We’ve tested 23 automatic litter boxes over the years ... testers lived in two-cat households and felt that the Litter-Robot 4 made their lives noticeably easier—and less smelly.