Use CLENID Rust and Limescale Remover on areas where rust and limescale deposits are common, such as teapots, boilers, shower stalls, shower hoods, sinks, toilets, bathtubs, tiles, ceramic bath surfaces and glassware surfaces. Pour directly into a teapot or pot. The solution makes a sound when it hits the limescale area. Wait until this sound effect stops. Do not use rust and limescale removers directly on tiles and marble surfaces in the bathroom and kitchen. Apply 100 ml (1 teaspoon) of Clenid Rust and Limescale Remover in 1 liter of water and after dilution.