Our Laundry Pre-Wash is a concentrated naturally derived biodegradable stain remover for most fabrics. Best results when the stain is treated before they dry and launder as soon as possible. Works on food, coffee, blood, dirt, and oil. No SLS. This is a great item to compliment our ECOS laundry detergents. Comes in a number 2 HDPE bottle. 100% biodegradable, no phosphates.