I like the ease with which I can change the combination. I didn't like that the locks wouldn't close unless the combination was aligned. This means I can't scramble the combination after opening the lock so prying eyes won't see it. This is a design flaw. Locks look cheap. I think I could easily take it apart or hit it lightly with a hammer to open the lock or maybe pick it. I don't know what you mean by clean. I left mine because the lockers we use are mostly occupied by elderly people and we don't expect any of them to take advantage of the 'cheap' lock sets. We could replace them when our need for security increases.