After 9 months of use, I have to say the following.
At first, I was extremely excited because the smell of the feces disappears after 10 minutes. It seemed unbelievable to me!
However, the room is full of clumps (as it happens with all litters) and unfortunately, the clumps from the urine are so big that with two cats, I need one 10-liter package every 15 days.
A very big expense.

It is a fairly good sand in the sense that it provides good clumping of urine and greatly controls odors. However, it is really very expensive. And it keeps getting more expensive...