Ok I just got my babies 2 days ago from TSC. They are <1 week old, they're on the same feed they were on at the store, and their brooder is comfy. Several of them have crusty dried poo on their back ends, I don't think it's blocking their vents but isn't this the beginning of pasty butt? It has definitely happened since I got them. They are so little I'm scared to do anything about it! I thought I wasn't even supposed to handle them much at first, the idea of trying to wash the dried poop off of their bottoms is intimidating. Will they really be ok if i do this? What is the gentlest way to remove dried poo from fluffy butts? Should I be giving them something besides their chick crumble? I specifically asked them at the store if they needed chick grit or any supplement and they said no. What should I do?