Bests & Worsts Reviews from Amazon

The idea and concept of this litter box is great, however the execution is terrible. Feces and clumps get stuck at the bottom of the ramp and under the sifter. I used the vegetable spray trick to avoid sticking to the base... to no avail! Pieces unless pretty sizable, do not make it the entire way up the ramp, and circle in the box for eternity. I use fresh step litter, and have not found any difference in the box's effectiveness based on the litter brand. I end up cleaning the unit almost as much as a plain old litter box. The side walls are very low and if your cat digs with any effort at all, feces and litter will be mounded outside the box daily. I need to keep a shop vac next to the box at all times. The plastic is flimsy and the lid warps after several months. Clumps will lift the lid off the base and stop operation. Buyer beware!