World’s Best Cat Litter Zero Mess was helpful when I moved into a carpeted place. Tracking was noticeably reduced compared to the original. Clumping stayed strong, though clumps were slightly larger. My cats didn’t seem to care about the change, which was a relief. I feed a mix of Kirkland Signature and Pure Cravings, and odor control has been fine. I’d recommend this version if tracking is your main frustration.