Decent, not great.
Bit of an odd one, bought on special offer. Clumps okay, not great, tend to break up a bit when you're trying to scoop them. Smell a bit strong, ends up just smelling like litter tray overlaid with perfume. Plus makes my cat (and myself) sneeze when topping it up. By no means a bad option, but I will be returning to the Biokat Classic Micro, which lasted longer and seemed more hygenic.
Good with one con
The first litter we used (after trying half a dozen), where one of our cats doesn't drug it out of the (closed) litter box.
On the downside, performance of clumping reduced after just a week to week (probably as the analogy of the smaller granules which do the clumping is reduced), so be prepared to empty the box sooner than later.