Hand sanitizer is a good way to disinfect when you don't have access to soap and water between hand washes, however we caution you to choose wisely since a variety of these products have been recalled . So, what kind of hand sanitizer should you use? "Alcohol-based sanitizers with 60 percent alcohol or higher are best at killing many types of germs," says Dr. Alexis. If your bottle contains any less than that, it may reduce growth of germs but not kill them. The CDC confirms a high alcohol content (also at least 60 percent) is required to kill germs.