Tidy Cats litter is good but the best thing about it is that it is very cheap to use. The bad thing is that you have to change the entire litter box fairly often as this is just loose clay litter and does not clump. If you clean it often the smell can be kept to a minimum.

Ever Clean Extra Strength Premium Clumping Cat Litter is a clumping litter so it's very easy to clean. It is also good on keeping the odor down because it stops the growth of bacteria. It is more expensive to purchase but as long as you keep scooping the clumps out you don't have to change the entire box so there is no waste.