Over time, hard water deposits may clog toilet rim holes and trapways. To clean, purchase a commercial cleaner that’s recommended for the removal of hard water deposits. Follow all instructions on the package.

Success with cleaners and procedures is dependent upon such factors as the hardness and temperature of the water, using exact measurements of ingredients, changes in cleaning formulas and the condition of the product being cleaned. Since there are variations within these factors, Kohler cannot guarantee the effectiveness of the formulas mentioned.