I agree with chrisboy. Wiping it down with a wet cloth wouldnt be too bad if done lightly. But thats if your in a rush... Probably better would be to put a bowl or cup of water in the humidor for a few days. And here is another idea I read, microwave the cup of water for a minute or two before putting it in the humidor. This will cut the wait time down from 2-3 days to maybe 1-2 days:) Hope this helps.