My Litter Robot 3 sometimes fails to sense my cat. I've tried all the troubleshooting steps. While it looks like it, it doesn't sit against a wall. My cats are also the
Keep Your Litter-Robot Working (and Smelling) Like New
Litter-Robot 3 Connect Review (Testing A $549 Automatic Litter Box)
Unbiased Litter Robot 3 Connect Review: We Tested It - Cats.com