Posted September 14th, 2017, 04:23 AM
"because you decided to put the glass you drank out of back under the dispenser and get some more lemonade."
I don't even know what this means. Every restaurant you have been to when they ask if you want more soda, they do exactly what you are referring too. How is this not sanitary? You are just pressing on a plastic bar.
The reason it is not 'sanitary' is because you have had your lips on the cup. When you press it against the bar you are transferring traces of your saliva onto the bar, all ready for the next person who comes along.
As someone said up thread, straws are often used in land restaurants, so your lips do not touch the rim of the cup. It is also a different matter with the machines that have a button to press so that the cup does not have to press the lever.