Shout Laundry Stain Treatment is tough on stains, but gentle on your color-fast machine-washable fabrics. It's triple-acting formula clings onto fabric stains in the washing cycle, penetrates stains quickly once sprayed upon, and lifts stains off of fabric. Shout triple-acting is 50x more concentrated than in-wash powder when applied directly to the stain and works on a wide range of everyday stains like food, grass, dirt, and blood. Works in all water temperatures. Shout has the stain-fighting ingredients to break up and remove tough stains so you can live in the moment, and clean up later. Effective on motor oil, grass, blood and other protein-based stains.