First, robot litter boxes are the coolest. It’s amazing that I never have to scoop a litter box ever again. Such a time saver and my home always smells clean. It’s also very easy to empty the waste tray. The litter cleaning process can be a bit inconsistent though, and sometimes it leaves a few clumps in the litter bed, but nothing an extra rotation won’t fix. My only disappointment is that the LED screen light doesn’t work, so I have to power cycle the litter box when I add fresh litter to reset the weight sensor. A bit annoying, but not a deal breaker considering all the other great benefits.