To provide a cleaning service of good quality for processing, in occurrence of a flaw in a cleaning object during cleaning, an option process for correcting the fault in real time.

This method comprises the step of reporting, in the occurrence of the fault in the cleaning object, fault generation information 11 to a customer through the Internet Ni, and instructing the treatment of the fault by the customer according to this. This step is realized by a server 8. When the customer transmits information C1 for instructing the treatment of the flaw, a process (s) is performed according to this, and the information C1 is transmitted from a network corresponding portable telephone 15 of the customer and received by a Web site managed by a cleaning agent. The process (s) is for correcting the flaw.

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