Made with up to 99.8% Pure Salt.
Made with up to 99.8% pure salt. Virtually 100% water soluble, these water softener salt blocks are specially formulated to resist mushing and bridging in the brine tank— helping to keep your softener clean and trouble-free. The Iron Fighter® water softener salt block (up to 99.6% pure salt) contains an FDA-approved, highly effective rust remover which helps to prevent rust stains on laundry and household fixtures.
Have a Water Softener Salt Question? Visit our Water Softener Salt FAQs page.
50 lb. Block
Diamond Crystal® Salt: A Brilliant Choice® since 1886.
Find within 10 miles of ZIP code.