I have used the TerraGel for a small personal "work of art". Namely, I felt like a kind of 3D paintings made of styrofoam with a river running along. The TerraGel has very well suited, but only for a short time, as it already shrank after a few days. The preparation is simple, the use for feeding animals probably equally. I would recommend it to anyone who needs it. But not for those who want to do so "Art": D