One of the most common causes of failure is sometimes referred to as the âcreeping crudâ or âold-ageâ or Biomat failure. Several factors contribute to the development of the biomat; time, wastewater strength, hydraulic load, groundwater saturation, and maintenance are the major ones.
Please exercise caution, and wear a mask over your nose and mouth to reduce the impact on your health. Removing Mold and Mildew growth from the Outside of a Dry Book: 1  If you can perceive growth on your book's cover, you may use a fine brush or very soft cloth to gently brush away the mildew.lease exercise caution, and wear a mask over your nose and mouth to reduce the impact on your health. Removing Mold and Mildew growth from the Outside of a Dry Book: 1  If you can perceive growth on your book's cover, you may use a fine brush or very soft cloth to gently brush away the mildew.
1 Spray Starbrite Mildew Stain Remover on the areas affected by mold or mildew. 2  Allow it to sit for a few moments so it can work. 3  Use a scrub brush or toothbrush for seat cracks or particularly bad areas. 4  A cloth scouring pad will provide gentle abrasion for most other mold and mildew cleaning jobs. Repeat if necessary. 2  Once the dirt, mold and mildew are gone, rinse well with water. 3  Mold will grow in any type of residue so be sure not to leave any behind. 4  Dry thoroughly with a towel. 5  Be sure to eliminate all moisture to reduce the likelihood of an immediate recurrence of the problem.