Bactericidal toilet and washroom cleaner. STC is used For descaling toilets and urinals or as a diluted solution for general washroom cleaning. - The thick blue liquid contains safe sulphamic and citric acids to dissolve limescale and organics and remove grease, body oils and scum from surfaces. - Ideal for cleaning toilets, urinals, showers and sinks, STC is safe for use on stainless steel. - Ideal for washrooms in hotels, restaurants, nursing homes, hospitals, offices, shops, stores and airports. Directions: - Pour or spray onto surface, allow to soak for a few moments before washing away with water. - Can be used diluted up to 10 parts water or undiluted, depending on level of soiling. Use a brush if necessary. - When cleaning chrome, dilute with 40 parts cold or hot water. - Do not use on acid-sensitive surfaces or vitreous enamel.