Prevention is better than cure. This specially formulated chemical agent used periodically for cleaning and maintenance, will ensure a smooth flow-through of industrial drains, sinks, toilets, showers, and urinals. Weekly application removes verdigris (green rust) and hard water scale build up. Sanitises and prevents costly blockages. Equally effective when diluted for more liberal use. Child resistant container. Fast acting and effective. Environmentally safe - 100% biodegradable.