This spray is POWERFUL against mold and mildew.  After showering, spray down walls and doors and let air dry.  For tough mildew, spray area, use a small brush to scrub and spray again, allowing spray to sit overnight.  This spray kills the mold over time so consistency is key.  Want to know the "Dream Team" for showers?  Team this up with our Multi Purpose Scrub "REFINEMENT".  These 2 products work SYNERGISTICALLY together, making tough showers a LOT easier to tackle!