Yea, I try not to bring anything from outside in.. And I'm sure one of the more seasoned owners might chime in on this. I know babies LOVE to lick, and are pretty notorious for being messy eaters/tasting things...I currently have a large climbing stick (from pet store, so no debris or anything on it), and hammock for my baby to climb on. So I'd be careful to make sure he's not eating anything he shouldn't..
But then again, I am also new to the site. And while I've cared for bearded dragons, I've never raised one from juvie age to adult (like I am now).