Wikipedia says, "Mold or mould, also sometimes referred to as mildew, is a fungal growth that develops on wet materials. Mold is a natural part of the environment and plays an important part in nature by breaking down dead organic matter such as fallen leaves and dead trees; indoors, mold growth should be avoided.
When mold is found in the walls of a house it should be dealt with immediately and professionally. This stuff makes people sick and really effects those with compromised immune systems, ie., children and the elderly. Call Rainbow Restoration and for a FREE evaluation of the situation.