Restore Your Bathroom Tiles and Grout: Simple Methods for a Sparkling Finish

If some stains persist, don't immediately grab the strongest cleaner under the sink. Instead, reapply the paste only to the darkest lines and let it sit a bit longer. Stubborn grout usually improves in layers, not in a single dramatic swipe. It's better to clean twice gently than once so harshly that you damage the surface.