Tuff Clean is a powerful, specialty acid-based cleaner with surfactants for fast and effective removal of heavy rust stains, fungus, and scale stains from concrete, mosaic tiles, pebble tiles, and quarry tiles. Able to also remove heavy scale build-up on floor tiles e.g. toilet areas, bin areas, heavy stains
 
Tough on built-up mineral deposits & rust stains
Ideal for tough stains in the bathroom, kitchen, garage, offices, hospitals, factories, workshops, public toilets, condos, hotels
Tuff Clean also effectively removes and breaks down limestone, and efflorescence, making it a versatile specialty cleaner.
 
Note: Not to be used on marble, granite, terrazzo, and other types of smooth, polished surfaces. If unsure, test on an inconspicuous spot to ensure suitability. Recommended to neutralize the area with alkaline detergent cleaners like Super Alka, Max-D after.