What is the best 100% natural clumping cat litter on the market? I use to swear by Arm & Hammer Natural Essentials All-Natural Clumping litter. Then while I was on the road I decided to try out World's Best cat litter and it is much better. When I returned home and started using Arm & Hammer again I noticed it didn't clump as well as I thought and I found the perfume scent too strong. Are there any others I should try out too? I've only had a cat for a few months now so I don't know much about litter. But I want to stick to the all-natural litters. I notice everyone in the stores always pick up Tidy Cat. Am I making the wrong choice?