Just like all appliances with water heating elements, calcium deposits or scale may build up after the water evaporates. The scale is non-toxic, but if left unattended, can hinder appliances’ performance.
Descaling your Wabi Baby sterilizer when needed helps maintain the UV sterilization efficiency. Depending on the mineral content of your water, calcium deposits may build up faster, making it necessary to descale more often.
Most water spots only require a simple wipe down, and to remove any stubborn watermarks, soak a clean paper towel in white vinegar and then lay it flat on top of water spots for 30 minutes. Then wipe clean again with a clean damp paper towel. This should remove the scale build up.
Also, see how to clean the air filter periodically to ensure drying efficiency.