Who told you Damp Rid works?? That stuff barely works. I bought about 3 of those closet Dam Rids and two packs of their powder stuff it brought my humidity down like 2%.to bring it up get 1 or 2 towels soak them in water, ring them out then hang them up in your room near the light or a big bucket of water inside of there. To bring it down u could use damp rid from Home Depot be careful it works a lil to well from what i hear or u could increase the air flow from inside to outside