Many homeowners try to "wipe away" mold when they see a dark spot on the wall or baseboard. Unfortunately, visible mold is rarely the whole story.

What happens when you apply bleach to drywall?

Bleach consists mostly of water. While the chemical component burns the surface layer of the mold (removing the color), the water content penetrates the porous material, actually "watering" the mold's roots and causing it to grow back aggressively.

Porous materials like saturated drywall and insulation cannot be "cleaned." Fungal roots penetrate them completely. According to strict industry guidelines, they must be safely extracted under negative pressure.