After reading Whitecatlover's thread about the Breeze litter system. I found it about 9 days ago finally! I love it. It took awhile for the cats to warm up to it but they are using it now and there is no urine smell. You still have to scoop the poop because the pellets really don't cover the smell of that. But I still have one traditional clumping litter box and one breeze available. They still tend to use mostly the clumping litter for pooing. Although they will use the breeze too. I had to follow the instructions for transitioning before they would poop in it. I put a cup of the pellets in their regular litter box and put them side by side. I really like this litter system. And it will be much easier for me to carry one small bag of pellets every month then a 25 lb tub of clumping litter! Especially with my rotten back problems. 1 bag of pellets and 1 bag of bottom tray liners is about $10 a month. Which I don't think is too bad.