I use Dr. Elsey’s ultra clumping litter in a Litter Robot, and yes, it works. I was worried it might be too heavy or dusty, but it cycles smoothly and clumps stay intact. I do notice some tracking, but that’s been true with every clay litter I’ve tried. Compared to cheaper brands, this one doesn’t turn into sludge. Between feeding Kirkland Signature maintenance cat food and using this litter, cleanup feels way more manageable day to day.