Products such as damp-rid and dries-air pull moisture from the air via a chemical called calcium chloride. They are very effective but a little expensive. That chemical is also the main ingredient in some brands of ice melt crystals, which are a little cheaper but come in big bags, I use this. I pour some into a disposable plastic cup and set it near the windows. As the crystals liquefy you will need to replace them. I've heard you can dry it out in a stove or something but have never tried it. Also after you open the bag be sure to seal it. I put it in a bucket with a tight lid.

Products such as damp-rid and dries-air pull moisture from the air via a chemical called calcium chloride. They are very effective but a little expensive. That chemical is also the main ingredient in some brands of ice melt crystals, which are a little cheaper but come in big bags. I use the ice melt. I fill a disposable plastic cup abut halfway with it and set it near the windows. Use as many of these as you need to do the job. As the crystals liquefy you will need to replace them. I've heard you can dry it out in a stove or something but have never tried it. You can cover them with a cheese cloth and a rubber band if you are worried about them spilling. Also after you open the bag be sure to seal it. I put it in a bucket with a tight lid.