I just installed four Luuup litter boxes. We contributed to the kickstarter campaign; they were supposed to get here four months ago. Instead, we got them a week or two before regularly purchased orders start shipping. I think. I didn’t pay attention once they missed the first three or four ship dates. I acknowledge the reality of being a cat person and buying into these magnificent inventions meant to make being a cat person even easier. The Luuup litter box uses a layered sifting system. According to the kickstarter video, it will change my life. I’m just hoping the cats use the damn things otherwise I’m going to have to go buy a bunch of litter boxes from the 24-hr supermarket later on tonight.