MB 9 Mold Mildew Remover cleans without scrubbing Removes mold mildew stains and odor on contact Regular use every 2 to 4 weeks depending on level of use will keep surfaces clean It is safe on most natural marble surfaces Be certain to test product first on a spare tile or inconspicuous area for extra caution before use MB 9 Mold Mildew Remover is now in quart and gallon sizes Now you can get a value pack that includes one of each size Save time and money when you use your ready to use MB 9 Mold Mildew Remover gallon to refill your MB 9 Mold Mildew Remover spray bottle It s that easy Features . Double down on mold mildew and save big with this value. Mold Mildew Remover Value Pack Directions for use . Spray on liberally Allow mold or mildew stain to disappear be careful to not allow product to dry on the surface Then rinse thoroughly Repeat these steps if necessary In the case of very old stubborn staining you can use a soft brush to help break up stain Drying is not necessary If used on surfaces that will touch food rinse thoroughly at least twice Specifications . Weight 12 lbs