PURPOSE: To improve the sanitation at a facility where MRSA infection may possibly occur such as a hospital and suppress MRSA proliferation by sticking an antibacterial medicine to sheets at least once, and drying them at the time of the cleaning process.

CONSTITUTION: The cleaning process is applied to sheets 2' repeatedly used against pathogenic microbes having a strong crisis rate such as MRSA at a hospital or a health center at the prescribed cycle by public health sanitary cleaning dealers. A prescribed antibacterial medicine 12, e.g. a quaternary ammonium amphoteric compound, is used to keep the general continuity of the antibacterial property such as the Proliferation suppression of pathogenic microbes via the dipping process or the spraying process in the washing process and the finishing process for the cleaning process. The antibacterial property is surely applied to sheets 2' at a proper cycle at the facility by the public health sanitary cleaning dealers, and the total sanitation of the facility can be improved.