What Do You Think? Chia Herb Garden

Yes ...the same Chia that brought us the Chia Pet!

Just recently, I received a Chia Terra Cota Gourmet Herb Garden for a birthday present. (I've been going on and on about wanting fresh herbs in the kitchen.)

Has anyone else tried one of these?

The kit comes with pots, seed packets, and (here's the strange part) 4 chia growing "sponges." I'm pretty excited about having fresh herbs, but also a bit wierded out by the fact that they won't be grown in soil.

Thoughts?

Also: how does one keep cats -- cats that love to eat anything green -- away from indoor herb gardens?