Shout Triple-Acting Laundry Stain Remover Is Tough On Stains, But Gentle On Your Color-Fast Machine-Washable Fabrics. Its 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 And Works On A Wide Range Of Everyday Stains Like Food, Grass, Dirt, And Blood.