Review on BoxiePro Air: Lightweight, Deep Clean, Scent Free, Hard Clumping Cat Litter - Plant-Based Formula - Cleaner Home - Probiotic Powered Odor Control by Tina Webb

That's all they claim. Definitely the best cat litter. Is always. There is almost no dust, lumps on top, so it does not scratch the bottom. No little "scrap", absolutely no smell, at least from the litter. And lasts longer than expected as it sticks together very quickly. I don't need to change the box, just add more if needed. No footprints or paw prints on the wooden floor after a few days away. We have a 25lb Maine Coon. The final challenge is to find a reliable litter box. It seems expensive but lasts MUCH longer than any other brand. And the light version relieves my back enormously!