According to the Merriam Webster Dictionary, the definition of “If it ain't broke, don't fix it” is an informal way to say that one should not try to change something that is working well. It is attributed to Bert Lance, the director of the Office of Management Budget during the Carter presidency. Like most idioms, this one gets overused and misused. However, when talking about criteria for judging the successful completion of a mold remediation project, it actually applies quite well.  

Many professionals now working in the mold remediation industry were not present at its inception. For them, mold remediation has always been a subset of restoration along with fire, water and contents. The fact is, just over two decades ago mold remediation burst into the consciousness of restoration professionals because of a massive lawsuit in Texas. In that case, the policyholder sued their insurance company because the dry down of a water loss went horribly wrong. It was claimed that the response to the water intrusion led to mold growth to such an extent that the occupants of the home all became ill. Eventually, after years of wrangling, the multi-million-dollar structure was demolished. ¹