CLEANER - ZUD 16 Oz.

A powerful heavy-duty powder cleanser specifically formulated to remove rust, hard water deposits, and tough stains that ordinary cleansers simply cannot touch. Zud's unique formula containing oxalic acid and calcium sulfate dihydrate dissolves embedded rust stains, iron deposits, mineral stains, and lime scale on contact -- working where ordinary cleansers fail. Effective on copper, brass, bronze, chromium, iron, pewter, ceramic, and stainless steel surfaces indoors and outdoors. The go-to cleanser for building maintenance crews and facility staff dealing with NYC's hard water conditions and the rust, mineral staining, and iron deposits that accumulate on plumbing fixtures, sinks, and surfaces in commercial and residential buildings.

Key Features:

• Dissolves Rust & Iron Stains -- Works Where Ordinary Cleansers Fail: Oxalic acid-based formula dissolves rust and iron stains at the molecular level rather than simply scrubbing them -- removing the embedded rust deposits, blue copper stains, and iron discolorations that accumulate from hard water in commercial and residential plumbing systems.
• Removes Hard Water Deposits & Mineral Stains: Effective against the calcium and mineral deposits, lime scale, and hard water staining common in NYC and other areas with mineral-heavy water supplies -- restoring the appearance of sinks, tubs, tiles, and fixtures to like-new condition.
• Broad Metal & Surface Compatibility: Safe for copper, brass, bronze, chromium, iron, pewter, ceramic, and stainless steel -- removes rust and corrosion from barbecue grills, boats, aluminum storm doors and windows, and a wide range of residential and commercial metal surfaces. Use with gentle rubbing on fiberglass, countertops, and plastics.
• Simple Powder Application: Easy wet-and-sprinkle application -- wet the stain, sprinkle Zud on it, rub as needed with a wet cloth, sponge, or brush until the stain is gone, then rinse. For stubborn stains, make a paste with water, apply, and allow to sit 1-2 minutes before rubbing.

Where to Use:

• Building & Property Management: The essential rust and mineral stain remover for building supers and maintenance crews dealing with hard water staining, rust deposits, and mineral buildup in apartment sinks, tubs, and fixtures across managed NYC residential and commercial properties.
• Commercial Restrooms & Bathrooms: Removes blue copper stains, mineral deposits, toilet bowl rust rings, and hard water discolorations in sinks, tubs, showers, and ceramic tile grout in high-traffic commercial restroom environments.
• Outdoor & Industrial Applications: Cleans rust and corrosion from barbecue grills, aluminum storm doors and windows, hand tools, and outdoor metal surfaces across commercial and institutional property environments.
• Commercial Kitchens: Removes iron staining, mineral deposits, and rust from stainless steel sinks, cookware, and kitchen equipment surfaces where hard water creates persistent discoloration.