This product is ingenious!  This self-cleaning litterbox was so easy to assemble, took less than three minutes. I may buy a couple more to save myself the work of scooping and cleaning litterboxes.  The self-cleaning box is made of durable plastic, but the tray where you put the litter is disposable, so you just replace that tray and the litter in it once or twice a month, depending on how many cats you have.  It does not require a lot of litter, but you do have to use the blue crystal kind (their brand).  The motor is pretty quiet.  I put this box out and the cat was using it within minutes! The box is a nice size—my 12-lb cat had no problem. The electrical cord is quite long (about 10feet), so there was no issue with where to put it and plug it in.  The cleaning apparatus runs twenty minutes after the cat uses the box, so I was not worried the cat would get scared by the noise or motion. [This review was collected as part of a promotion.]