How can a cardboard box work as a litter box?

How can a cardboard box work as a litter box, you might ask???

We have developed technology that applies plastic directly on to the inner surface of the box. It is very similar to liquid containers you buy in grocery stores (i.e.. chicken broth, orange juice, etc.). 

Our box can hold up to 3 inches of liquid without leaking. View a demo by clicking here: Kitty Poo Club's Leakproof Box

While cats may enjoy shredding cardboard, they will not destroy our litter box. Cats are territorial, and will not destroy their domain (...the litter box is a part of that domain).