Shower tile grout should be cleaned with a moisture-control approach, not just a stain-removal approach. The usual problem is a mix of soap residue, mineral deposits, trapped dirt, and early mold growth in damp joints. The U.S. EPA says damp areas should be dried within 24 to 48 hours to help stop mold growth, which is why grout cleaning works best when it is paired with faster drying and better ventilation.
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2026-04-29