I am really sorry if this is already covered. I have looked and looked and see lots of advice for hens with poopy butts but does this advice also apply to chicks? Mine are 4 days old and have a bung of poop in their buts. I have tried to wipe the butts wih a damp tissue but am really afraid of hurting them. Can I bath them? I don't know why this happened. I am feeding them chick crumbs and give them fresh water every day. I have organc apple cider vinager- should I give them soom. Any advice would be appreciated. Also does the ACV last or go off?