Chemfree Toilet Cartridge
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Keep Your Toilet Clean without Harsh Chemicals
Prolong toilet life! The ChemFree(TM) Toilet Cleaning Cartridge helps prevent stain & lime buildup. Just drop in tank; works up to 50,000 flushes (5 years!). Non toxic, safe & chemical free. Buy one for every tank! For hard water, two are recommended. 4"L x 1 1/2"W