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This smart move prevents food from clogging up the appliance. Some high-performance models are equipped to remove even the most stubborn dirt.
The latter allows you to add a good amount of salt depending on the water hardness. It is therefore important to know the limescale content of your water.
You can enter this information on your water bill.
There are also so-called “all-in-one” products that contain both salt and rinse aid.
It is recommended to use them with a “tablet” programme, if your appliance has one, and to place them in the detergent drawer and not in the cutlery basket.