Toilet and washroom cleaner. STC is used neat 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. Safe on porcelain, stainless steel, chrome, ceramic and tiled surfaces when used as directed Spray or pour on to soiled surface, leave for a few minutes contact time. Then flush away thoroughly with water. Agitation with a brush will help remove stubborn stains. CLEANING CHROME - Dilute 1 part to 40 parts of cold or hand hot water. Apply to the surface, agitate and rinse thoroughly with clean water.