Offered exclusively to dealers, our premium-purity water softener salt contains up to 99.8% pure salt. Virtually 100% water soluble, it is uniquely compacted for hardness to prevent mushing and bridging in the brine tank. This helps to keep your softener clean and trouble-free. The Red-Out® formula product also contains a highly effective rust remover which helps to prevent rust stains on laundry and household fixtures. Our bags are made with 50% recycled material. This premium quality product is NSF-certified.