porous materials mold removal 4

https://hiddenmoldhomepath.inkharbory.com/posts/how-to-spot-hidden-mold-in-home-before-it-causes-major-damage

Dealing with mold on porous materials like drywall or unsealed wood requires more than a bleach wipe because the spores dig deep. You'll need to gently scrub with a stiff brush and a cleaner formulated for porous surfaces, then thoroughly dry the area to prevent regrowth. Sometimes, especially if the material is saturated, the only real fix is cutting out and replacing the affected section to fully eliminate the colony.