A New York artist, Sally Davies set out to show the effects of the 'icky' ingredients in some fast food products. Sally has created an artwork called the Happy Meal art project, in which she photographed the daily lack of transformation of a McDonald's Happy Meal 979 days.
Her name was Bernice.
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bun don't go moldy because there is no mold spores in/on it in the first place without this it just dry out.
pretty much the same with cooked meat just dry without bacteria or mold.
and again same with fries.
You can show a alcoholic what happens to a liver when you drink too much, that won't stop them from drinking...
This won't stop McDonalds serving billions and billions of burgers.
Anyway, this is product to sell, if you are eating this you are doing good only to them not to you, just remember it.