The Arm & Hammer™ Super Washing Soda Powder Laundry Detergent Booster is a high-capacity 55 oz. unit designed for use in washing machines. This biodegradable powder is suitable for both handwash and machine washing, making it a versatile addition to your laundry routine. With a scent-free formula, this Arm & Hammer product is not only effective but also environmentally friendly, as it is CSE Certified Sustainable Economics. Made in the United States, this multicolor detergent booster is a reliable choice for keeping your clothes clean and fresh.