I am disabled and have found that the product called Makall available at Wallmart about three dollars a bag which works for my very poop filled two cats works for a whole month or more. It absorbs urine and evaporates odors. It dries out poop and is very light before and after use. I have tried everything from the CatGenie, Booda Boxes and all the litter brands but have found that creating my own litter box by taking a large storage box with a removal lid and cutting a door high up on one side so cats don't track litter and than placing a regular litter pan inside with a brim and than using Makall makes cleaning easy and works so well. If you have trouble cutting out door, use a drill to make a hole, cut with a jigsaw. Here is their litter website
http://www.silica-gel.com/en/productlist.asp?tid=7 I use the blue bag with kittens called Makall try this you will be so glad you did. PS many people also use the litter in panty hose to quickly dry boots and shoes and one man uses it to keep his guns from rusting.