I've written quick a bit previously on humidity, de-humidity, relative to Malaysian weather, among others at Wood Fungus, Mould, Kulat Kayu and Fungus Mold.
We're all quite familiar with brands like Thirsty Hyppo or Tesco's alternative version. So today I was reading the TheStar and Guardian had a full page advertisement on Charcoal Dehumidifiers. Yes, Charcoal, aka Arang. Interesting isn't it.
Guardian Charcoal De-humidifier
So googling led me to this CNN article. The article states that charcoal has a vast array of cavities creating a huge surface area, i.e. Luas Permukaan.
So well it's sounds like a worth try. Baking soda, now charcoal. Cool!