Finish Dishwasher Salt Crystals help soften hard water and protect your dishwasher from limescale buildup. Unlike regular table salt, which may contain impurities that can damage your dishwasher, Finish Salt Crystals offer 100% extra protection against limescale residues due to their high purity. For optimal cleaning results, fill the salt container according to your dishwasher’s instructions and check the salt level at least once a month or when the softener indicator lights up. Keep away from children. Do not ingest. In case of ingestion, seek medical attention immediately.