I've had LitterMaids for years. Since we have multiple cats, it's important to always have a clean box. While the previous models certainly weren't perfect and didn't last as long as I thought they should, they at least did a fairly good job. This new model misses even large clumps, creates a smelly clump behind the rake, and wastes a lot of litter that gets raked into the receptacle. This last problem is caused by a change in design, which has the rake just push the waste into the receptacle instead of lifting it, which means that all of the litter that used to sift back into the box (in previous models) now gets dumped. I've taken to emptying the receptacle back into the box and sifting myself. The only plus with this box vs a standard plastic one is that the littler stays a little cleaner. Certainly not worth the money!!! Save yourself the hassle and find an older model.