I know someone answered a question about treats and grit with a link to a grit size reference. I thought it was at this site (Raising Baby Chicks), but I can't find it again. If anyone could repost that, I'd appreciate it. My chicks are now almost 4 weeks old, so I suspect I could just provide them with some sandy dirt from our land. The grit I bought at the pet store seems to fine, and they are wolfing down dandilions that I give them. But, I would love to have that reference that I somehow managed to lose.