The answer:
To effectively treat these areas, you need to penetrate surface pores with something that will kill the organism while removing any available nutrient or residues, which might harbor or provide food for the mold.
Hot, moist steam at temperatures of 220 to 230 degrees Fahrenheit will penetrate far deeper into all substrates, destroy the mold organism while at the same time remove ... — Rick Hoverson, Advanced Vapor Technologies, LLC
