This Guide provides information and guidance for homeowners and renters on how to clean up residential mold problems and how to prevent mold growth. The content on these web pages is based on EPA’s publication ” mold remediation Santee CA Molds are part of the natural environment. Outdoors, molds play a part in nature by breaking down dead organic matter such as fallen leaves and dead trees, but indoors, mold growth should be avoided. Molds reproduce by means of tiny spores; the spores are invisible to the naked eye and float through outdoor and indoor air. Mold may begin growing indoors when mold spores land on surfaces that are wet. There are many types of mold, and none of them will grow without water or moisture.” Updates have been made to some resources and links.