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Molds are microscopic organisms found virtually everywhere, indoors, and outdoors. Mold spores are tiny, lightweight, and easily detached by airflow, vacuuming, walking on a carpet or sitting on a couch. In indoor environments, they grow in air-conditioning ducts, carpets, pots of household plants, etc. They produce and release millions of spores, which are small enough to stay airborne threatening to invade the human respiratory system. Mold growths can often be seen in the form of discoloration, ranging from white to orange and from green to brown and black. In large quantities, molds can cause allergic symptoms similar to those caused by plant pollen. In order for mold to grow, it needs food sources (such as leaves, wood, paper, or dirt), a source of moisture, and a place to grow.
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