Pool stains are unattractive and can be hard to remove. Stain Away allows you to both prevent such stains, and will remove many stains. It will fight against tough stains that are caused by the build-up of metals and minerals in the pool water. That’s why it’s important to prevent stains as much as possible. Stain Away pool stain remover is a very effective product which helps to combat stains caused by the build-up of metals and minerals in your pool water. While Stain Away swimming pool stain remover will prevent scaling, stains and brown water, it will also lighten some existing stains.