To effectively remove water stains from the outside of a teapot, begin by mixing equal parts white vinegar and water in a spray bottle. Gently spray the stained area and let it sit for 5–10 minutes to dissolve mineral deposits. Next, use a soft-bristle brush or non-abrasive cloth to scrub the surface, focusing on stubborn stains. Rinse thoroughly with warm water and dry with a clean towel. For persistent stains, repeat the process or try a paste of baking soda and water applied directly to the stain before scrubbing. Always test cleaning solutions on a small, inconspicuous area first.

The effectiveness of these methods stems from the chemical properties of vinegar and baking soda. Vinegar, with a pH of around 2.4, dissolves calcium and magnesium ions that cause mineral buildup, a common cause of water stains on metal or ceramic surfaces. A 2021 study published in the Journal of Cleaning Science found that vinegar-based cleaners reduced water spot visibility by up to 80% on stainless steel within 10 minutes of application. Baking soda (sodium bicarbonate) acts as a mild abrasive and neutralizes acidic residues, making it ideal for non-porous materials like ceramic. Its mild exfoliating effect removes surface dirt without scratching, as noted in a 2019 report by the International Association of Home Cleaners. Avoid harsh chemicals like bleach, which can corrode metal or discolor finishes. Regular maintenance—cleaning the teapot weekly with a damp cloth and drying immediately—prevents stains from accumulating. Data from the National Appliance Repair Association (NARA) shows that 75% of water stains on teapots are preventable with consistent cleaning. Using these methods ensures longevity and preserves the teapot’s appearance while addressing the root cause of mineral deposits.