Clearance testing consists of a visual inspection of any area remediated as well as taking air samples. In the event the air samples indicate the remediation was unsuccessful, it will be necessary to consult with the remediator as to possible causes noted during the visual inspection. The remediator will need to perform additional cleaning, if the air samples indicate a problem.

It is important to confirm that the remediation was done properly and that the work area(s) were contained so as not to impact other areas of the residence. If a real estate transaction is involved, the buyer and seller will want documentation that the mold problem has been resolved.