My experience with having 2 cats and working in a vetenerian hospital in the past tells me that there is more to litter box problems than only "litter" itself.
Most people that would come to consult with their cats would often ask about that problem. The thing is that if you feed bad and cheap food to your cat, he will eat more of it to feel full, thus creating more feces. Also, the cheap food and table scraps make it smell really really worst than it should. Basically, a cat should get the best food possible of course, but will also reduce considerably the smell and quantity of feces. This fact is even more noticable with dogs.
As for the litter itself, i have tried all the best brands available in the hospital's store. I am lucky that my cats will use whatever i put in their box but i noticed they have their preferences...
The worst one was the crystals. It looked nice when it was new. Although it was great at drying the solids and making it easy to scoop out, i found the urine would never really absorb and the crystals soon turned into a bright yellow only a few days after making it look disgusting to anyone who would use my tiny bathroom. And the smell? unbarable!
Any other kind i tried would just be disapointing until i got Scoopable FELINE FRESH, made from pine shavings.
http://www.planetwiseproducts.com/index.htm I must admit i tend to forget the litter box ever since i moved and put the box in the basement. But with this stuff you can't smell a thing, it clumps really well. You can flush it but i prefer putting it in the trash. Anyway you can also compost it if you want. I haven't found anything wrong with it except for a little tracking but it was worst with the crystals which would scratch wooden floors if you got a chip stuck under a shoe or something. it's also very light so i can purchase a big bag on my own.
I am planning on getting either a Litter Robot II or a CatGenie... because i just keep forgetting to clean the litter box!
Oh and the cats? Well they seem to dislike the pine getting between their toes and the fact that they can't have fun throwing aroung litter chips, but that's life! At least they use it well and it works!
