From Elsmar Cove Quality Assurance and Business Standards Wiki
Seiso - Clean the workplace; everyone should be a janitor.
English equivalent: Cleanliness
One of the Five S parts.
Seiso, the third step in "5S", says that 'everyone is a janitor.' Seiso consists of cleaning up the workplace and giving it a 'shine'. Cleaning must be done by everyone in the organization, from operators to managers. It would be a good idea to have every area of the workplace assigned to a person or group of persons for cleaning. No area should be left uncleaned. Everyone should see the 'workplace' through the eyes of a visitor - always thinking if it is clean enough to make a good impression.