I had the same problem... I found a product at Home Depot called Damp Rid... It looks like a clothes hanger with a plastic bag attached to it...
the top half has white and yellow beads in it, the lower half is empty...
it works like a Dri-z-air and the moisture collects in the lower half of the bag ... I was surprised as to how much water collected in it after only 2 weeks... the only draw back is it is scented and makes your safe smell kinda girly!!