Sheild Limescale Remover's acid based formula has been designed to swiftly remove grime and limescale from all washable surfaces in toilets, washrooms, showers and changing rooms. It kills the bacteria which cause skin infections and is effective against fungal infections such as those which cause Athlete's Foot. Apply using a mop, cloth or sponge. Use neat to remove limescale. Dilute: 100:1 to prevent further limescale build-up.