Fujikura sells optical connector cleaners “One-Click Cleaner SC PRO” and “One-Click Cleaner LC PRO”. Grease and dust adhering to the ferrule end face of the optical connector can be cleaned with a single click. Cleaning work time is reduced by approximately 45% by adopting a structure that enables cleaning of the ferrules on the connector side and the receiving side without replacing the guide cap. Achieves over 775 cleaning times, which is approximately 1.5 times that of conventional products.