I love Littermaid products. I have 2 large male Meezers, so I bought a reconditioned LM900 Mega box about 3 years ago. I've never had a day's trouble with it over the 3 years, even though both cats use the same box. One cat is very timid and I was afraid he wouldn't use it because of the cleaning mechanism, which is a bit noisy, but he loves the box and so does his brother. Since there is always clean, fresh litter for them, they use it without reservation and I know they are healthier for it. Sure, there's still a little maintenance to perform--I have to scoop out some of the smaller pieces that fall back into the box after the rake, and sometimes my guys will fill up a corner--but I don't have to clean the entire box several times a day and empty the litter every other day or so like I would have to with a conventional box. There's virtually no litter dust or odor, since the box cleans itself and covers the debris every time it's used. I highly recommend Littermaid products to anyone who loves their cats.