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Given
the proper conditions, molds more commonly found outdoors
may also proliferate in the indoor setting. Molds readily
enter indoor environments by circulating through doorways,
windows, heating, ventilation systems, and air conditioning
systems.
Molds
proliferate in environments that contain excessive moisture.
This moisture is derived from leaks in roofs, walls, plant
pots, or pet urine. Many building materials are
suitable nutrient sources for fungal growth. Paper
products, cardboard, ceiling tiles, wood, and wood products,
are particularly favorable for the growth of some molds.
Other substrates such as dust, paints, wallpaper, insulation
materials, drywall, carpet, fabric, and upholstery commonly
support mold growth. Molds also may colonize near
standing water.
Some
indoor molds have the potential to produce extremely potent
toxins called mycotoxins. Mycotoxins are readily absorbed by
the intestinal lining, airways, and skin.
Bulk
mold must be removed, followed by a thorough cleaning with
soap and water. Caution must be used, because it is possible
that homeowners could actually increase the levels of mold
spores in the air by attempting extensive clean-up efforts
without guidance from a professional.
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