The masks could help those that knowingly/unknowingly had this thing keep it to themselves while sanitizer would help reduce surface germs from coming into the store.
“while sanitizer would help reduce surface germs from coming into the store.”
How? Specifically how is using hand sanitizer going to reduce the germs? Again, there is no magic here. A person can simply touch their nose, another part of their body, or something else, and that hand sanitizer isn’t going to magically keep away the germs.
This isn’t Hogwarts.