I have a small Intex Easy Set that I put up seasonally on a concrete patio. The past year, especially, I had a lot of mildew/mold growing on the ground cover under and around the pool. I've always used the Gorilla/Rhino pad type cloths. Is there something that would be better as far as mildew/mold goes? This is on concrete, so I guess I'm not getting the drainage that I would normally get if it were on grass and the cloth tends to stay wet which causes the mildew/mold. Anyone have any experience with this? Thanks!