i used to have the same issue with my kitty! also a black cat, going into the litter box and coming out a different color.You are so right about that, my brothers wife came home with a kitten that she "bought" in a pet store, strike number #1. My brother and one of his sons are allergic to cats, strike #2. When I finally got a chance to go visit and meet the kitten, who was cute as a button, she had the liter box under the kitchen table,
strike #3. The liter box was over flowing with poop, strike #4. And the minute you walked into their house the smell of liter, urine and poop almost knocked you over, strike #5.
This second wife of his had been unemployed for almost a year and a half, she can't care for her 2 girls so she added a poor kitten to the mix. Well after the kitten I could no longer keep my mouth shut. So now it's 6 months me and my brother haven't spoken. I could go up to strike #100 with his wife; but unfortunately I have to admit, we are the exception and not the norm. I have 7 cats, and if I think I smell something, out comes the bucket brigade.
I have been doing some research on my own to find a better liter, since my Swheat Scoop is now way too dusty any more. My new poor black kitten comes up from the liter box with a white face and head because she loves to dig and bury, so my mind is made up, Swheat Scoops got to go. Thanks for your comment and insight.
I used to use WBCL, assuming a natural litter would be dust free but it was not. It was even worse, creating what i could only describe as brown and orange SOOT. poor girl. i had issues with eliminating outside of the box while using WBCL, so i don't think she herself didnt like it much.
I went back to clay. I am using Nature's Miracle Intense Defense clumping clay litter. AMAZING. I can't stop raving about this litter. Clumps instantly. Hard clumps, unscented, VERY MINIMAL dust and tracking. amazing odor control. I love it. I also have been mixing with it recently (about 3 days now) with Dr. Elsey's Precious Cat unscented clumping litter. Also great. Although the clumping ability is not as great as the nature's miracle brand, it is virtually dust free. the dust is my #1 concern.
Tracking with both litters are very minimal. I've learned, after using numerous litters, and litter types and brands, you can't get rid of tracking.