The OxiClean Maximum Strength Stain Remover can be used as a pre-soak or as laundry detergent booster. The maximum strength stain remover is 100% chlorine-free for safe use. This stain remover is also great for eliminating food stains, grass stains, grease, oil-based soil, organic matter and water-based soil. Safe, gentle and maximum-strength stain removal Use as a pre-soak or as laundry detergent booster 100% chlorine-free for safe use Stain remover comes in a 30 lb. container Great for eliminating food stains, grass stains, grease, oil-based soil, organic matter and water-based soil