All you can do in that South Texas humidity is wash and dry every fabric, even those that didn't seem to be wet, because mildew you do NOT need! Before washing, hold the ends of the fabric together and snip a small diagonal piece out of both corners. That will help to keep the fabric from fraying so badly. You'll still have some fraying, but not nearly as much as you would if you didn't do that. Be sure those fabrics are completely dry - bone dry - before you refold them. Bless your heart - I can really sympathize with you. But what kind of a builder would be insane enough to build a basement in South Texas, where if you dig down twelve inches, you have instant swimming pool? Keeriminy! He oughtta be sued!