All the baths are drained and cleaned within 24 hours. Additionally, the baths are disinfected daily with hypochlorous acid. By draining the hot water through the drain plugs at the bottom of the baths, we remove sediment-prone yunohana and hair, ensuring the baths are always filled with fresh hot spring water. Therefore, to enjoy the best spring quality, we perform a 3-hour cleaning starting at 9:30 AM.