Why Moldy Carpet Padding Is Often Harder to Salvage Than the Carpet Fibers

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When mold gets into carpet, the fibers on top can sometimes be cleaned with special solutions, but the padding underneath is like a sponge — it soaks up moisture and holds onto mold spores deep in its structure. That padding is often made of bonded foam or rubber, materials that are nearly impossible to fully dry and sanitize once they're contaminated. Even if you scrub the surface, the padding can keep releasing mold spores and musty odors into the room, which is why it usually has to be cut o…