Abstract: A mop having a self-contained wringer includes a handle, a sleeve frictionally movably disposed on the handle such that the sleeve is self supporting along a number of positions of the mop handle, a retainer member connected to an end of the handle and having a retaining surface, a mop head material having one end connected to the retaining surface of the retainer member, a relatively flexible housing portion having a first end connected to the sleeve and a second end extending outwardly therefrom creating a mop head receiving surface area between a portion of the handle and an inner surface of the housing. The housing is further characterized to be generally hemibulbous and include a slit extending from the second end toward the first end such that the housing may movably overlap over itself and to change the receiving surface area. Also, provided is a retrofit self-contained mop wringer housing of the type described for connection to a wet mop of the type described.