My little 1 week olds are already trying to dust bathe in the pine shavings. I want to put a little bowl of sand/dirt in the brooder but I want to know what is safe. I have some colored reptile sand from an old gecko we used to have. I was going to use that but I wanted to make sure it would be safe for the chicks. It is purple for one, but I also think it is vitamin enriched (since the reptiles ingest some and lay in it all day). Think it could be trouble? Is some sifted dirt from outside ok? We have an older flock out there so I didn't want to risk the spread or illness while they are so young. Our ladies had dry fowl pox a few years back so it makes me nervous to use any dirt from the yard. Thoughts?