Does Ozone Kills Mold?
Yes, ozone will kill mold, but there are steps to a proper mold remediation treatment. Upfront, do not expect that ozone is a simple mold kill treatment. It is important to deal with the whole problem and not miss steps.
First, solve the water issue. Find and stop the source of water. Mold cannot grow without a moisture supply. Even high humidity (over 70%) can contribute to mold. Then, dry out the area to assure that the water issue is solved.
Second, remove all heavily molded goods and clean all surfaces with a proper cleaner.