Corte-Clean® was designed to be used from the time composites are new, throughout their life-cycle. Failure to properly thoroughly clean composites made from exposed wood fibers of what is known as “tannin bleeding”, & especially those additionally made from dirty recycled plastic, of this & other dead organic dirty matter that lands on composites from which molds, mildews, lichens, mosses & algae can feed has resulted in them being infamously notorious for fungi growth, & rapid re-growth, especially if scientifically unproven cleaning products have been previously used. Once composites are thoroughly Corte-Cleaned®, of this inherent flaw, proactively routinely using Corte-Clean®, at the reduced “routine cleaning” strength, to remove new stains & stain causing derbies, such as mold spores (seeds) that have landed since. This is why most, if not all, composite manufacturers recommend & Corte-Clean® was designed for semi-annual cleaning, “at least twice yearly, spring & fall, or when stains appear”, to keep composites clean. Generally, the more routinely Corte-Clean® is initially applied, less & less is applied, the more time, labor & money is generally ultimately saved.