We bought the 20l version (which is brown, not blue/green).
Our 4-months male cat unfortunately didn't like this one. We tried it for less than a week and then had to switch back to our old litter. It's too smelly after just a few days even though the wet pellets were removed frequently (though it's difficult to remove only those, so quite a few remained in the box). Easy to remove the poop though. We refilled the box with fresh pellets every day, but just overall too smelly in a ventilated room, and our cat didn't like to use the litter box anymore. Also tracks outside the litter box more than our previous clumping litter.
Good that it's compostable though, so it goes straight into the garden's compost, and it doesn't dust of course (though we noticed that our cat had tiny particles of the pellets on his forehead because he was sniffing too closely haha). Good price.
Was recommended by a colleague who had success with this and his female cat, but unfortunately it's not for us. Maybe if your cat's pee isn't that smelly, this one will work.
