I have been using the Breeze System with Cat Litter Pellets and Pads for several years and find it to be the best system overall. No messy litter being tracked all over and cleanup is a breeze! I keep it in the bathroom so disposing of solids is simple--just scoop and flush. Liquids go through the pellets onto a pad underneath and simply remover and replace monthly. Not having to sweep up litter which is unsanitary as well as messy is wonderful! And the price of pellets and pads is cheaper overall than the messy litter!