Upgrade your home's water quality with Hathoro Water Softener Salt, available in both Crystal and Cube formulas — each packed in a convenient 40 lb bag. Made from all-natural sodium chloride with no additives and up to 99.8% purity, these high-quality salts are designed to keep your water softener running at peak efficiency. The Crystal formula uses solar salt to effectively soften water, reduce scale buildup on fixtures and appliances, and improve overall water flow. The Cube formula features a Resin Cleaning Formula that helps extend appliance life, reduces spots on dishes by removing mineral deposits, and minimizes scale accumulation. Both options result in softer-feeling skin and hair, less buildup on surfaces, and easier cleaning throughout your home. Compatible with all traditional water softeners, simply add the recommended amount every two months — 2 bags for 2 people, 3 bags for 4 people, or 4 bags for 6 people. NSF certified for your peace of mind.