Does Coke Remove Hard Water Stains?

Does Coke Remove Hard Water Stains? So instead of purchasing those expensive fizzies or abrasive toilet bowl cleaners, head to the fridge and let the carbonation of Coke work its magic on filthy rings, lime buildup, and water stains. Because Coca-Cola contains carbonic, citric, and phosphoric acids, it’s great for tough stains and dissolving rust.