Yup, I have a Litter Robot 4 and we love it. It saves a ton on little costs, but was a massive upfront cost.
Easier to travel and the litter stay clean, it’s always clean for the cats and they love it. We’re big fans.
I had no end up trouble with my Litter Robot 3. So much I ended up just throwing the whole thing away.
Keeping itself clean while we’re gone is such a huge benefit. We have three cats and finding people to care for them used to be a pain in the ass. Now we have the Litter Robot and a couple of automatic feeders so we can leave for days at a time and the cats barely notice we’re gone.