The Laundress Machine Cleaner is formulated to remove lime scale, rust & build-up caused by the iron and calcium found in your water which effects your laundry. Having a clean washing machine will increase energy and water efficiency, reducing your bills. Not only will the Machine Cleaner clean your machine, steamer, iron, and dishwasher, it will extend the life of your washing machine. Also perfect to add to "hand wash" areas such as sinks, tubs, and taps. Natural, non-toxic, and bio-degradable. Phosphate and VOC free. 16 fl. oz.