SERVPRO of Berrien County, MI is expert in the removal and remediation of mold inpacted facilities. Many times there are impacted areas that aren't visible.
A Stevensville, MI business had some water in their basement storage areas. They removed the water themselves. Weeks later more water got in the basement and a terrible smell began seeping into the rest of the facility through the air conditioning system. They called SERVPRO to handle the situation. We extracted water from affected areas and set drying equipment. Then we sanitized the entire basement. But the telltale odor of mildew was still present.
We found a previously mold impacted cement wall covered with drywall. This material was removed and the wall sanitized. The odor was eliminated. Sometimes hidden areas cause the biggest problems.