What are signs of mold in your house?

What are the signs of mold? It has a musty, earthy smell. There’s a nearby source of moisture, but not much light. You see warping, cracking, or peeling of whatever material it’s growing on. A drop of bleach lightens its color in a minute or two. Unchecked, mold will continue to grow. Dirt and old stains 4014 Fox Valley Dr, Rockville, MD 20853 (301) 717-1454 http://www.mdmoldtesting.com https://www.facebook.com/MDMoldTesting/