Very good, cat loves it
I got one of these with my Zooplus points.My cat likes me to feed him grass, a blade at a time, he has trouble pulling it out of a pot. Knowing that the grass I had growing in the garden would be dying off for winter I ensured this was growing in good time. As I have never had much luck with getting him to eat specially grown indoor grass before I put the bowl outdoors once the shoots had grown as the fresh air makes a difference.
It has been a success, I still have to feed it to him but he enjoys it, and also likes to bury his face in the dish.
If you find your cat isn't keen on it, try putting outdoors for a few days but keep it out of the rain.