For regular loads in front or top loaders, add 10 mL (2 capfuls or 8 pumps). For problem stains, dissolve 10 mL in 5 L of water, and pre-soak the item for a minimum of 30 minutes before washing as usual. Use in any water temperature, including cold. Concentrated formula / 100 loads per 1 L bottle / 100 buckets for pre-soak loads.