How To Clean Shower Tile Grout

Shower tile grout should be cleaned by removing surface residue first, then scrubbing with water and detergent, and drying the area completely. Mold and dark staining often come from moisture retention, poor ventilation, and soap buildup inside porous grout lines. EPA guidance says mold on hard surfaces should be scrubbed off with detergent and water, then dried fully, while CDC also warns not to mix bleach with ammonia or other cleaners.