Our ceramics may exclusively be cleaned with cleaning agents of the annually updated List RK by the German Association for the Recreational and Medicinal Bath Industry e.V. in a ph-range from 5.0 – 9.0. For the optimal and environmentally friendly cleaning we therefore recommend the ceramics cleaner particularly developed for the Sommerhuber heat storage ceramics. This cleaner goes therefore easy on the surfaces. Clean the ceramics with a clean, moist and soft cloth, do not use any wire wool!