In this study after randomization, patients in Group A (catheter valve group) will be given a catheter valve before they are sent home with the catheter.They will be asked to close the valve 3-4 hours (time required for adequate filling of bladder, which means minimum of 250 mls in bladder with natural filling) before their appointment. It is very likely that by the time these patients are seen in the TWOC clinic their bladder is already full and they will void soon after removal of catheter.The patients in Group B (control) will go home with free drainage catheter and urine bag (standard catheter removal). These patients on arrival, in the TWOC clinic will have an empty bladder when their catheter is removed, they will then drink plenty of fluids in the clinic and wait for their bladder to be full before they void spontaneously.