Really great
Large crystals, need a scoop with bigger holes. Makes a noise but kitties are fine with it. No dust, no smells, and urine is absorbed. It discolours the crystals but no smell and you only have to remove the dried out poos. So far it has lasted over a week with two kitties and no sign of needing to change it other than the slightly yellow colour. Other Tigerino ones with finer sand lasted only three days and the smell was unpleasant when cleaning, but not terrible.