Soap
that kills 99%-99.99% (depending on how bold the marketers are) of
germs without using water. You'll usually find hand sanitizer in classrooms, offices, and stores.
I didn't use
Purell's hand sanitizer since it only killed 99.9% of
germs. It seems much safer to use CVS' generic hand sanitizer since
it kills 99.99% of germs.