* Broxomatic always gives clean washing results. * Tap water contains limestone in varying quantities. * This makes tap water hard. * Hard water hinders the action of your detergent. * To avoid this, your dishwasher is equipped with a water softening system, which only works if you use dishwasher salt. * And therefore not by the salt function of your dishwasher product. * Goes into the dishwasher in one go.