great product
This product is great. I use this on all hard water. If you careful you can use it on metal like water fountains. You can't leave it on very long or it will burn the metal. I leave it on just long enough to lighly scrub with a green or white scrubby. It takes it off fast and you don't need to leave it on very long. I then just rinse it with water and your done. Just make sure the area is ventilated. It's a great product and if you buy it from Office Depot you don't have to pay shipping. All other places want to charge you around 99.00 for shipping.
February 20, 2013