I use a *certain* brand I tested for two weeks and have only found in onme place - a Dollar General store that no longer has any on-shelf. I did find one of the bags that I bought contains 'pieces' that do not stay together at all - poor quality-control maybe? But, it is theoretically possible w/ some 'big-name' folks using it. However, test it 'vigorously' to see if it'll break apart. If it does break apart, it becomes a mass of clay that dries into a solid clay ball that is super-harmful. Fair to say its a fine line to walk
There's other stuff (similar) available that is better/as-good, but spendier for sure asit is a much-higher level of QC, I believe. To test the 'litter', let it sit in small glass of water (whatever) and gently stir it around or such to give it a bit of 'friction' such as having water poured over it and roots pushing (so slowly, though) it around within the soil-mix. If tiny pieces start falling off and layering to bottom of glass, toss the whole bag as far as soil-mix component goes, IMO. Make sense? With more soil-components becoming more-easily obtainable, its not really feasible to search high and low for the 'cat-litter that works', fwiw....