As others have said earlier in the thread – CFC's doesn't pool at the poles. The processes that creates ozone holes require certain conditions (extreme cold and

As others have said earlier in the thread – CFC's doesn't pool at the poles. The processes that creates ozone holes require certain conditions (extreme cold and darkness) that only occur by the poles. (https://en.wikipedia.org/wiki/Ozone_depletion https://en.wikipedia.org/wiki/Ozone_depletion)