Protecting consumers with clean cannabis products - those free of mold and pesticides - is becoming ever more critical as the market matures. So, what can indoor and greenhouse grows do proactively to keep the end users of their product safe? This presentation will outline upstream approaches to help growers minimize harmful microorganisms, and maximize crop production as a result. This presentation will be led by a PhD chemist whose career has been devoted to the mitigation of mold through ASTM validated chemistry for indoor cannabis grow facilities, including chlorine dioxide.