Many users write that the cat grass is not risen ... Mix well, the recommended amount of water to it and enough light. after a few days I had ne lawn in the living room. At first I thought that these "Earth" with could be pulled out and that the whole mess is murder ne ... I was disabused. It remains everything good in it and the only thing that bothers is that lying around blades of grass. This can be but at Katzengras never prevent. I am very happy with it.