For a few weeks we now use bag number 6 (approximately). The color and consistency of the litter is now quite different: darker color, coarse grains (therefore less dust) but the "adhesiveness" is equal to zero and our cats and their little business have not changed.
The scattered with which we were satisfied, was essential "woody" and fine.
The "new" is spreading in the grain size similar to Betonitstreu, has hardly "fine" fibers and thus binds probably much worse.
Very unfortunate. A stray is not (more) clumps nobody needs.