One of the best features of MAPS 2 is that it will reactivate whenever it gets wet to prevent future mold growth. To address the high humidity levels in the crawl space, we installed a Sani-Dry Sedona commercial grade dehumidifier. These dehumidifiers cost less to run than other dehumidifiers, cover over 3000 square feet, are energy efficient, and will properly control the humidity levels in the crawl space.