Once you have everything, from each individual work area through your entire facility, sorted (clutter and debris cleaned up), and organized, it’s important to keep it that way. This requires regular cleaning, or to go along with the theme of having five words that start with the letter S, "shining" things up.
5S shine involves more than pushing a broom around a work area once a week. It involves regular, usually daily, cleaning. The work area should be returned to the condition it was in when the day started - including putting away all tools, materials and supplies used that day.