Like most re-posters have stated it depends. Having a competent mold removal company assess the damage should be your best bet. Definitely suggest getting several quotes. I was able to find some great info and service from this mold company in Hudson County New Jersey. They were helpful, not necessarily the cheapest (1 other bid cheaper and one more expensive) but worth it. I was provided a certificate of completion and warranty which was helpful since I was selling the home and wanted to make the current buyer aware that the problem was resolved and the warranty transferable to them.