Most people believe they can kill mold with bleach but what they are doing is actually making the situation worse. Once someone uses bleach, the mold may not be visible anymore but now the mold is destructing drywall and breaking down the components of your building material and with now cracks and crevices mold can seep in and make a home and you will never see it because now it is in your walls and spreading itself like wild fire. In these instances always call a professional like USA Restoration Pros, they can kill and treat the mold from spreading. USA Restoration Pros also used all organic plant based cleaning products that are safe for you, your children and pets. Now that is much better than using bleach!