A prospective randomized blinded crossover clinical trial will be performed in the medical intensive care unit at Rush University Medical Center. The intensive care unit will be divided into two regions (A&B). Hub disinfectants and duration of disinfection will be randomly assigned to these regions. After 1/2 of the study period, the agents will crossover, but the duration of scrubbing will remain the same, analogous to a 2 by 2 factorial design. Our primary endpoint will be internal contamination of hubs and catheters.