Recommended for use when buildup has accumulated beyond what the chlorine generator’s polarity reversal can clean. Used undiluted. The cell is carefully removed from the cell housing with the electrical connection disconnected, and the metal part is submerged in a plastic bucket containing WTR CELL CLEAN liquid until the buildup on the metal plates dissolves and is cleaned. Ensure that the metal plates are fully submerged in the liquid. After use, the treated surface should be rinsed thoroughly with water.