To extend the location of cleaners currently concentrated in residential areas to office districts and extend business hours so as to develop the new strata of customers and contribute to a wide public benefit.

An office convenience store (in figure 1 of the attached paper) provided in the zone of a big city recently provides services such as the reception of development, printing and enlargement 3 and large-sized photocopy 5, and a cleaning agent 8 is provided inside it in addition to them. The clothing asked by a visiting customer to clean is delivered to a factory each fixed time, and sent back to the agent after the cleaning treatment. Then, it is returned to the customer in exchange for the money. The office convenience store is located in an office district and open for 24 hours, whereby the above problems can be solved.