I have had a problem lately with real wood and mold in my humid enclosures. My BRB has no real wood in her enclosure, so this does not apply to her. The problem is with my JCP and Indo Tree Boa enclosures, both of which have real wood branches. Both snakes require moderate humidity, but allowing even moderate humidity results in visible mold, or a mildewy smell in the enclosure, despite any adjustments to ventilation, or frequency of cleaning. The Indo Tree Boa is currently housed in a plastic bin, with paper towel substrate (which is changed every day or two at most) and despite cleaning the enclosure, branch, etc, a mildewy smell persists. There is ventilation holes drilled in the side of the enclosure. The JCP is in his new digs, with indoor-outdoor carpet for substrate, and has one twisted vine he climbs on. This morning, it was coated in white fuzz, even though it was cleaned with bleach and hot water when I acquired it a few weeks ago, and his carpet was just cleaned with bleach and hot water the day before, and replaced. I like having real wood in the enclosures, but if it's going to mold on me, I may just do everything fake.... any suggestions?