I have seen a few mentions of dust free litters that people use. Can anyone recommend a specific brand name? I am so tired of the clouds of dust and lack of odor control in the clumping clay litters I've used. I have tried Feline Pine and Swheat Scoop, but my cats wouldn't use them, even with a gradual introduction. Is there such a thing as an unscented, dust-free litter that most cats like? I would appreciate any suggestions. Thanks.