One single teaspoon that easily dissolves, undresses and re-freshes Our customers appreciate how a small amount of our Super Concentrated Laundry Detergent can clean a variety of clothing types - including heavily soiled gym clothes or diapers - which makes it cost effective, convenient and eco-friendly. And because you use so little, it easily dissolves, is effective with cold water and won't leave any residue behind. Don't worry, it's also septic safe, woo!