so damp rid is a good solution, but what about a more DIY solution? For my Humidor I use both heartfelt beads, and the silicone kitty litter for humidifcation control. The beads both absorb and release moisture. I'm sure the kitty litter has the same moisture absorbing properties.
Anyone used it in a keezer to lower the RH? I may throw some in a jar this evening and see how it works.