Thats what they put the wrapper on for.
Also, asphalt, in normal summer conditions falls under 23.4GA in terms germ absorption capacity, as it is a Category C surface (hard and dry, and no cloth like material such as carpeting). Since its winter, if there is snow and that its at least -10 it falls under only 3.3GA germ absorption capacity. Any surface under 10 it is safe to eat anything that has been there for over a day, or 30 days, if still in proper undamaged packaging (assuming the product does not expire before).
BTW I just made all that stuff up, but I should come up with a system like that, would be funny.
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