Two choices and I also agree with the other response. There is a product called Damp Rid which you open the top of the can and sucks all the moisture out of the air. That product works great but if you are having severe problems use a product called Drylock. It is a masonry Waterproofer for interior and exterior and they also make a floor sealer/waterproofer. If moisture is coming in thru the floor it is most likely also coming in thru the foundation of your house. Do the walls also if they are not already finished.