1. A MOP COMPRISING A MOP HANDLE AND MOP HEAD CONNECTED WITH THE MOP HANDLE, IN COMBINATION WITH A CARRIER, A ROD CONNECTED AT ITS FORWARD END WITH SAID CARRIER, A SLEEVE SLIDABLE ON THE MOP HANDLE AND PIVOTALLY CONNECTED WITH THE OTHER END OF SAID ROD, A GUIDE ON THE MOP HANDLE THROUGH WHICH SAID ROD PASSES TO PERMIT IT TO MOVE LONGITUDINALLY ABOVE THE MOP HANDLE, SAID CARRIER HAVING A SLOT OPENING THROUGH ITS SIDES AND BOTTOM, LOOPS HAVING PORTIONS MOVABLY GUIDED IN SAID SLOT, SAID LOOPS BEING LATERALLY DEFLECTED AT THE UPPER END AND PIVOTALLY CONNECTED WITH SAID CARRIER AND BEING FREE TO SWING OUTWARDLY INTO OPEN POSITION AND INWARDLY INTO CLOSED POSITION, SAID LOOPS WHEN THE CARRIER IS MOVED REARWARDLY RIDE OVER THE MOP HEAD AND SWING OUTWARDLY TO PERMIT THE LOOPS, WHEN IN THEIR REARMOST POSITION, TO PASS OVER THE MOP HANDLE INTO LONGITUDINAL ALIGNMENT WITH THE MOP HEAD FOR THE FORWARD EXTRACTING MOVEMENT OF THE LOOPS.