Dissolves the hardest of calcium, lime and rust buildups. | Blasts calcium deposits from glassware, tile, tea and coffee pots. | Dissolves lime scale from coffee pots, humidifiers, tubs, toilets and sinks. | Zaps rust stains from stucco, brick, porcelain, chrome and metal. | Also great for cleaning pots, pans, stainless steel, dishwashers and washing machines. | Safe on all plumbing, such as copper and plastic PVC. | Won't harm flow of septic. | Biodegradable and non-toxic. | Phosphate-, bleach-, ammonia- and alcohol-free.