So far we almost have enough to cover the bottom of the jar. Some of it is in little clear plastic beads. Some of it looks more like cat litter. According to this Wikipedia entry the blue ones are dry and the pink ones are wet. I guess the clear one's don't have the color-indicator stuff added. I might have to separate some of the different kinds out once we get some more and do some experiments.
I always used to wonder what would happen if you ate it (since all the little packets advise you not to.) I found an article once from an EMT that said it was about like eating sand. However after reading the above entry and the things they actually do to it, I think I'd try sand first.