Indoor mold is a serious concern for any homeowner. When you are concerned that your home may need mildew removal or mold remediation, check for the signs of a mold issue, you can start by looking for visible signs of mold. Black or brown spots on your walls, ceilings, or flooring are a good indication of a household mold issue. Along with visible signs, mold can also be identified by its distinctively musty odor. In addition, you may find that you or your family members have health reactions to mold exposure. These symptoms can range from allergies to sinusitis and other very serious issues.