So we changed to super benek about a month ago. Previously used catsan. definitely a convert to clumping litter. However a few issues. 1. when do you change the full tray? At the moment we top it up and I changed it after 2 weeks but we seem to go through it quite quickly. It doesn’t appear to be any more economical than the catsan just now unless I’m doing something wrong. 2. My kittens are persisting in eating it. Usually when it’s in clump form- yuk. Not in great amounts but enough that one of them was sick one night and I could see bits of litter in it. is there another economic alternative?