Yes, a Magic Eraser (melamine foam) can effectively remove light to moderate hard water stains and mineral films, but it works primarily through micro-abrasive mechanical action rather than chemical dissolution. The microscopic melamine foam acts like an extremely fine sandpaper that buffs away surface mineral rings on glass, porcelain, and tile. However, for thick, heavily calcified mineral crusts or stubborn rings inside toilet bowls, a Magic Eraser alone will struggle unless paired with an acidic chemical cleaner like white vinegar or CLR to dissolve the underlying mineral bonds first. Verification: Test the sponge on a small hidden area to ensure the abrasive texture does not dull glossy finishes.
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