I dont use cat "litter" so to say. I use this thing called the Breeze System. Its a special type of litter box and I LOVE it. I have two cats and a small house and you cant smell anything coming from the room the litter boxes are in.

The breeze system uses these pellets and then below the litter box there is a drawer with a pee-pad. The pee pad has enzymes in it so you cannot smell the cat pee. I think it says to change the pad once a week, but I just change it once you can see that it is full of urine (even then it barely smells!). You just use a scooper to scoop the poop out from the pellets. The pellets can be changed once a month or so depending on how many cats you have. The cost for the pads and pellets seems like a lot but you have to take into consideration how often you are changing them verses how often you change litter. It evens itself out.

I personally hate the smell of litter, even clean litter. This is the best solution I've found!! Many grocery stores and pet stores sell them. Check it out, I'm sure theres a website too.