Q Salt Granular Salt for Water Softeners Because of the unique structure of this salt, it may dissolve in liquid and remove lime scale buildup from your faucet and most other plumbing fixtures. Once the deposits of hard water lime scale have been removed, the softener salt may remove odours and clean your dishes. Use granular to gently remove hard water deposits without compromising the plumbing system. It removes the rust and scale off brass, piping, and copper touch tanks.