I know certainly almost all varieties, but this oist by far the best thing is to have. We attach particular importance to ensuring that the scattered non-dusting, if the cat scratching a lot and it dusted, sneeze often and do not like, especially the fine dust in the guest toilet is then to be found everywhere. The grit is ideal even for very sensitive paws, smell pleasant to delicate baby bonding, it does not dust ... what our cat perhaps best place, it clumps outstanding and neutralizes odors extreme. All this is well worth the small extra cost us all. Only this!