content: I was using plain old kitty litter before I starting buying Critter Litter. I was such a mess it was almost not worth litter training. They would drag it around the cage and make a big mess. Now however, these stuff is perfect. It does just what I need. As for the litter becoming cement like yeah that does happen. It happens to a lot less of a degree if you add a good inch to the tray no just enough to cover the bottom. Just make sure you add enough and it is great. It's a little pricey but the amount of time and effort it saves me its worth it.