12 OZ, Washer Magic, 2X Concentrated Formula With 3 Uses Per Bottle, Specifically Designed To Remove The Scale & Hard Water Build Up From Washer Tubs That Damages Clothes, Reducing Their Useful Life, When Circulated In The Machine During The Wash Cycle, Increases The Solubility Of Lime Scale Build Up, Use It Every Month To Help Clean Lime Rust & Build Up, Odor Causing Residue & Maintain Washer Performance, Clean Washers Are Gentler On Clothes Which Extends Clothing Life, UseMore Frequently For Strong Odors Or In Hard Water Areas, Works On Both Top Load & Front Load Washing Machines.