There are many reasons why careful cleaning is required in restroom facilities and washrooms: depending on the setting, toilets, showers, and changing rooms in office buildings, production facilities, hotels, restaurants, gyms, sports arenas, or shopping centers are used by many people. This inevitably leads to people's skin coming into contact with various surfaces that have been touched by practically all users of the facilities—including door handles, faucets, or toilet flush buttons. Consequently, microorganisms can pass from one person to the next. This must be prevented by means of defined cleaning sequences.