Made from pure crystallized evaporated salt with no added anti-caking agents, synthetic dyes or denaturants.Regenerating salt is essential for any dishwasher, so dishwashers need to be regularly refilled.The integral part of automated dishwashing is the ion exchange which traps the calcium and magnesium ions of the water, therefore trapping the hard water and feeding the soft water into the machine. When this becomes blocked, limescale can build up on glass and cutlery. This natural salt ensures that the hard ions are exchanged and ensures optimal rinsing results. Salt 100% biodegradable, packaging is recyclable Sonett Regenerating Dishwasher Salt is part of the range of Sonett 100% biodegradable dishwashing products. Find a variety of dishcare products from Sonett, for both handwashing and the dishwasher. Have your dishes coming out sparkling clean and germ-free with Sonett\'s range of dishwasher tablets, gels and powder, and not forgetting the rinse-aid! Explore the full range of popular Sonett products, including household cleaning essentials and Sonett sensitive products, available from Big Green Smile.