2 Boxes of 55 oz (3 lb 7 oz) For regular wash: 1. Add 1/2 cup of Super Washing Soda along with either liquid or powder laundry detergent at the beginning of the wash cycle. 2. Add clothes and let washer fill completely. For tough stains: Fill container with warm water. Add 2 tablespoons of Super Washing Soda per gallon of water or 1/2 cup in the washer. Pre-soak for at least 30 minutes before washing. For best results pre-soak overnight and then add 1/2 cup of Super Washing Soda along with detergent in wash cycle. Traps and drains: To help keep traps and drains open, dissolve 1/2 cup per gallon of warm water. Run hot water down drain, add Super Washing Soda solution, then flush with hot water. Do not use for blocked drains.