Our first week as chick-herders is under our belt. We've got the girls (4 of them) in a 20" x 30" rubbermaid, so it's probably a bit more room than they needed in their first week. I've got about 2" of wood shavings in the brooder and the "Chick Days" book I'm using as a guide says to clean it out around day 5. I'm wondering if this is really necessary so soon? I stir the bedding once a day and it seems pretty dry. Can I do a 'deep bedding' method in the brooder (add some more bedding, stir it up, etc) or, since they're so young and more sensitive to issues, should I actually clean all the bedding out and put in new? I want to keep my girls healthy but also don't want to throw away bedding that still seems perfectly good. At what point do you change brooder bedding completely? When it looks/smells like it needs it? A little guidance would be wonderful. Thanks!