I use Cats Best - its a wood based clumping litter, lasts ages, doesnt smell, clumps really well so you only need to scoop the clumps (and solids of course ) leaving the remaining litter clean. the Petfood Warehouse - Cat's Best ÖkoPlus Clumping Litter - For Kittens & Cats - Make unpleasant indoor odours a thing of the past! - Pet Products Delivered to Your Door - it does track around the house a bit though I have 4 trays downstairs, 4 out in the garage and 1 tray upstairs (I used PAH wood pellets for the upstairs tray though - mainly because of the tracking, I've got carpets upstairs and it doesnt track as much as Cats Best).

Worlds Best is simply crushed corn husks - nothing else. Chick crumbs have a lot of other ingredients in them - obviously they would, as they are a feed for chicks! Crumbs are more like Cats Best in texture rather than Worlds Best which is much finer, I stopped using crumbs because of all the other stuff in them - not that cats eat them deliberately (although some might!) but can ingest some when washing paws etc.