Molds are microscopic fungi found in nature and carried by the air in homes. once inside, mold can grow if it is in the presence of sufficient water or moisture and nutrient materials such as wood, cardboard or drywall. They are often found in damp areas like the basement, bathroom and around windows. When small amounts of mold are removed regularly, it's usually not a serious problem. On the other hand, when they grow significantly, mold disperses respirable spores into the ambient air, which affectsair qualityyour home and in some cases can lead to health problems.