Tap water contains lime to a greater or lesser extent. Because of this, tap water is hard. Hard water interferes with the action of your detergent. To prevent this, your dishwasher has a water softening system, which only works when using dishwashing salt. And therefore not by the salt function in your dishwasher detergent. Safety Information. Keep out of the reach of children. Consult a physician or poison control center in case of feeling unwell or irritation after swallowing. In case of contact with skin, wash skin with lukewarm, gently running water. In case of contact with eyes, eyes should be rinsed with lukewarm water for at least 15 minutes. Contact lenses should be removed, if possible. If swallowed, rinse mouth, drink 1 glass of water immediately and do not induce vomiting. Never administer anything by mouth to an unconscious person.