Arm & Hammer 01191 Baking Soda 10.8 lb Bag Powder - Pack of 4

Large size for big volume uses like pools, laundry or top-to-bottom spring cleaning. The re-sealable waterproof plastic bag allows for use and storage in high moisture areas. Optimizes chlorine performance for crystal clear water. Neutralizes odors safely and effectively. Balances pH levels naturally.