Really very good
I bought this on a recommendation from a work colleague after regaling my colleagues with the woes of one my kittens pooping outside her litter tray.
We figured out she only like a really clean tray, so over the course of a night, fresh litter soon becomes too soiled for her to use and she will poop outside the litter tray.
With Catsan clumping, the clumps form so well you can easily remove them. The only thing to beware of is sometimes it's like soft concrete so solid is broke my scooper.
Because this product is ridiculously expensive I switched to cat best after getting a sample of the litter from a friend. Her ample worked well and because cats beat was cheaper I opted for that, big mistake!
Cats Best have changed their formula and the clumps no longer form well, meaning I have a huge bag of useless litter and a kitten who has returned to pooping outside the box.
Catsan clumping I will be back!