How was cat litter invented?

... even afraid it might be a bit of a nuisance, distracting from his main business. At first all he did was make up a marketing slogan and tack it to his office door: "KITTY LITTER: Takes the place of sand, absorbs and deodorizes." It was that last ...

http://living.msn.com/family-parenting/pets/off-the-leash-blog-post?post=e670a868-408a-4d64-a059-58f96edfb143