Mold needs water and food. Mold can grow almost anywhere there is water, high humidity, or damp conditions. Molds are often found in homes and schools that have been flooded or have had water leaks. Mold grows faster in warm temperatures and high humidity. Molds can even grow in desert areas if evaporative (swamp) coolers are used. Mold can feed on paper, fabric, wallpaper glue, sheetrock, wood, soap scum, leather, and many other surfaces. Molds grow by producing very small spores that can settle on wet surfaces and grow to the visible forms of mold common in the bathroom of most homes and schools.