I have the top screen covered in aluminum foil and taped for minimum air and a damp towel on top. I am spraying hot water a couple times a day but I'll spray every 2 hours or so and fluff the aspen so it doesn't become moldy. I'll check around here and see if I can get the sphagnum moss with nothing in it but if not I'll just try and have some by the time he sheds the first time. Thanks!