Does hand sanitizer really work? ( it's my science fair topic )?

Question

Does hand sanitizer really work is my high school science fair topic. What i was gonna do what buy peachree dishes, i think they are called then take a cotton swab and wipe it on my hand then in wipe in the dish and i guess you can see all the bacteria and everything. Any other suggestions?

Answer 1

How you design the experiment will be crucial.  The control will be people who walk in and get swabbed without washing or wiping their hands.  But the experimental group will rub the sanitizer in first.