There aren't many cons to owning a cat, but dealing with a litter box is a definite negative. With the ScoopFree self-cleaning box, you may never need to stoop and scoop ever again. When your cat steps out of the box, ScoopFree's rake does the dirty work for you, sweeping waste into a covered compartment. The best part? You'll only have to replace the tray once every few weeks. Available on Amazon; $129.95.