MoldGuardian™ is a mold prevention product Currently Being Used By Amgen, Celgene and Pfizer to remove mold from their operations and to prevent and keep any new mold growth from contaminating their environment for up to one year. All natural GRAS ingredients make it safe and easy to apply MoldGuardian™ by spray, fog or wipe. MoldGuardian™ is excellent for ventilation systems. Once applied, MoldGuardian™ dries and becomes water resistant, continuing to be a new spore growth barrier that lands on its surface for up to one year.