Zep Calcium, Lime & Rust Stain Remover

No, you should avoid using this product on natural stone. Because it is an acidic cleaner designed to dissolve mineral deposits, it can etch, dull, or permanently damage sensitive materials like marble, granite, and limestone.

For heavy-duty buildup like thick rust or severe hard water scaling, use the product full-strength. For lighter maintenance cleaning or less stubborn deposits, you can dilute the concentrate with water, though you should always start with a weaker solution and test a small, inconspicuous area first.

Yes, it is generally safe for chrome and stainless steel, but you must be careful. Apply the solution, let it sit for a short time to break down the deposits, and rinse thoroughly with water immediately to prevent any potential discoloration or pitting.

Yes, because this is a commercial-grade acidic cleaner, you should always wear gloves and eye protection. Ensure the area you are cleaning is well-ventilated, and never mix this product with bleach or other household cleaners, as this can create hazardous fumes.

While it is specifically formulated to dissolve calcium, lime, and rust, it will often help loosen soap scum that is trapped within mineral buildup. However, if your primary issue is soap scum without mineral scaling, a dedicated soap scum remover may be more effective.