This set of 7 Himalayan sauna salt balls are meant to be used with Saunum heaters and climate devices.
How to use them: the salt balls are added into the designated slots in the climate device. The climate system then uses them to enrich the air with salt ions. If you wish to use the Saunum aroma oil set for an aroma sauna esperience, simply remove one of the salt balls from its slot and replace it with the ceramic bowl from the aroma set.