I have noticed that my chicks (2 weeks old) are taking "baths" in the sawdust and wonder if I should or could put a little sandbox in there for them to take "baths" in. I know the big chickens love to take dust baths but I worry if I put the sand box full of sand in there that the chicks might eat too much sand and get sick or something (my first chicks, I'm such a worrier!) Do you think it's okay?