If you have a particularly large cat or you have more than one cat then you should consider getting a Jumbo Kitty Litter Box. Your cat will really appreciate a bit of extra room to maneuver. Also they will have more space to use that is clean and so there will be less chance of them getting upset by their litter box being too dirty or getting anything on themselves. It is also great for multiple cat households for the same reason. We have two cats and two litter boxes but both of them use the Jumbo box now as long as they have access to it.
We originally ordered the Jumbo box for our especially large Persian, Celtic Twilight, because he was getting to big for his old box. We had no idea how big it would be when we ordered it and we laughed when it came in the post. It looks like double the size of a regular box. This will only suit people that have a place to put it but it is definitely a worthy purchase for you kitty!
Here is the link to the one we bought (very reasonable price as well)
http://www.zooplus.ie/shop/cats/cat_litter_litter_boxes/hooded_litter_box/127398
