Bio-D Limescale Remover tackles Limescale build up on multiple surfaces, from taps and tiles to shower screens and sinks using powerful, plant based cleaning power, Great at cleaning and great for the planet. 100% naturally derived Cruelty Free and Vegan. Suitable for Septic Tanks Ethical Consumer Best Buy 5L refill for the 500ml spray How to use: Shake and adjust trigger nozzle to spray nozzle. Spray onto surface, leave for 15 seconds and wipe off with a clean damp cloth. For tough marks and grime, spray and leave for 2 minutes before wiping.