Look no further than Noba Cateco Cat Litter Box Starter Kit for a complete system that will allow you to be more efficient and spend less time changing your cat’s litter tray. Designed with one-of-a-kind air circulation technology, this litter box reduces humidity to prevent bacterial and fungal growth that is responsible for nasty smells. Liquids that reach the bottom of litter box simply go through the aerator allowing litter to breather and stay dry, making your house smell like home again.