Mold thrives in conditions where there are high levels of humidity and moisture prevalent. Mold needs moisture from the air to survive. When humidity levels drop below 60% it will not be able to thrive. We would recommend our SaniDry dehumidifier as a good solution to this problem, as it can remove 110 pints of water per day from a basement. Its air filter can even remove particles from the air as small as 2 microns!