So you are tired of your cats kicking out litter or litter tracking in general? The SmartCat Corner Litter Box might help. It has high sides to prevent litter kick-out. It has a footprint of 18 x 18 x 9 inches. Its triangular shape allows you to fit it into corners.
This litter box also has a fill line to show you how much litter to use. Costs under $17 at this time.