Address the problem of hard water in your home with Compass Minerals(R) Natural Salt(R) 100% natural extra coarse solar salt. By removing calcifying minerals from your softener system, the high purity crystals help reduce energy consumption, extend the life of your pipes and fixtures, and remedy lackluster hair and skin. The crystals' scouring effect also prevents bridging, mushing, and channeling in water softening units. | Sure Soft 100% Natural Extra Coarse Salt | Size 40 lb