Great for cat grass
Can be used with any cat grass and while it’s meant to be used without soil, instead using the provided stuff, I actually started using it with soil. Way cheaper to just get a big bag of decent soil and some seeds, it also helps the cat grass last longer. You don’t need more than a few seeds for this to get a sufficient amount of cat grass, the amount they say you should use is crazy. One sixth bag is sufficient.
It keeps the soil away from the cats. Awesome.