I really do love our littermaid. We bought our first a couple of years ago and bought the mega sized. It finally wore out and this time we accidentaly bought the smaller version, but we think it actually works better. Maybe because the motor doesn't have to power the rake to travel as far? The best tip I have is don't waste all the money on the receptacles. Buy one box of them and then use plastic grocery bags to "line" each before placing the receptacle in the litterbox. There is plenty of room under the receptacle for the excess bag. Clean up is even easier when all you have to do is pop the receptacle out, find the handles on the bag and pull it out, tie it, and dump it in the OUTSIDE garbage (it's pretty stinky). One receptacle can last for ages that way...and no having to wash them out by hand.