Hello everyone. First of all, I would like to apologize for my possible grammar mistakes since I am not a English speaker. My question here is what litter works best for Litter Robot? I have tried Arm&Hammer, but it would become sticky when cats urine. It would stick on the inside walls of the Litter Robot and hard to get it off. Then I switched to The World's Best. But I don't feel right with it, either. The dusts look larger comparing with common litters, and they would attach on the cat's body when he finishes. My cat would travel around with his back attaching dozens of dusts. Every time he jumps or runs, dusts would separate from his back and drop on the place he stand. Sometimes I can find hundreds of dust on my bed. I am really exhausted when seeing so many litter dusts all around my house. Anyone has the experience of using Litter Robot please help me out! Thanks a lot.