Wet basements, even after cleaning up, can carry a musty odor for months. If proper ventilation does not remove this odor, fill a gallon bucket of water and add 3/4 cup bleach for every gallon of water. Mop over the basement area, using this solution and let sit for five minutes, then rinse and allow to dry. Make sure to open windows after applying bleach to the floors, proper ventilation is imperative. A neat trick is to grab a piece of dried charcoal and place it in a tin or metal container, leaving the container open. This piece of charcoal will absorb many odors in the air. For more basement tips, or help with your basement problems, visit us at http://www.mar-flex.com.