Not good
Although it says on the packaging that it should form firmer clumps, in my experience this doesn't form clumps at all. Besides that it seems fine but since it doesn't form clumps, I need to change the whole litterbox more often. I was always using Biokat's Diamond Care and I find it very good, one time when it wasn't on stock I purchased this model - Classic 3in1 fresh, but never again, luckily Diamond Care is back and that one I recommend firmly.