Kitchen: Use BKF to clean cookware, sinks, stoves, oven doors, backsplashes, non-stone countertops, and drained-floors. BKF will make your pots & pans shine like new. Use BKF to buff-out knife marks on ceramic plates. Read note below before cleaning appliance exteriors. Bathroom: Use BKF to clean sinks, tubs, showers, faucets, toilets, tile, and grout. BKF will quickly and completely remove mineral deposits, soap scum, and rust stains. Outdoor: Use BKF to clean stainless steel grills, vinyl siding, tools, hardware, ornaments, boats, and sporting equipment. Use BKF to dean vehicle surfaces that you have first tested. (Read note below.) Use a pail of water and sponge or hose to rinse BKF. Sprinkle onto a wet surface. Rub gently with a wet cloth or sponge. Rinse thoroughly with clean water within a minute of application, then wipe dry. See note below about testing delicate surfaces. Note: May etch or dull delicate surfaces. Test a small, hidden area first. Rub extra gently on fiberglass, plastics, anodized aluminum, and brushed metal surfaces such as appliance exteriors. Always rub in the direction of the brush lines. Do not use on: gold, silver (sterling silver is Ok), polished stone, cast iron, or surfaces that are lacquered, painted, or mirrored. Safe for septic systems.