After reading up on it some more, I'll admit my lack of understanding of hand sanitizers. From the wiki: "Alcohol rubs kill many different kinds of bacteria, including antibiotic resistant bacteria and TB bacteria. Alcohol rubs inactivate many different kinds of viruses, including the flu virus and the common cold virus. Alcohol rubs also kill fungus. Not all pathogens are equally susceptible. Certain bacteria, especially the spore-forming gram positives (e.g. Clostridium difficile) are relatively resistant and remain biologically viable. During the Anthrax attacks on the United States Postal Service, authorities warned that alcohol hand rubs would not kill anthrax spores. In environments with high lipids or protein waste (such as food processing), the use of alcohol hand rubs alone may not be sufficient to ensure proper hand hygiene."