I love the idea of this litter and it performs as advertised. It clumps well and is so much lighter than clay. My cat is big with long hair so unfortunately, this litter clings to her. That is the only drawback; she tracks it around. I don't like many things about clay litter but I may have to do a combination of the 2 for a medium weight litter that will be at least that much more sustainable than clay only. If I could, I would use only Catalyst wood based litter.