It doesnt matter give them a bath any time you want to
Keep very close eye on them feed them canned food cooked in the microwive for about 5 to 10 secs and feed and water them every 3 or 4 hours don't leave the water out they can drown. Do this until they get about 2 months old and help them get on dry food then.
Uh yeah its not illegal so do it lol
He is 15