Too late to aerate?

[cutntrim]

We've got maybe half-a-dozen customers that wanted fall aeration but we haven't had time to get to it. Wanted to do it back in September, but we're shortstaffed and have been too busy. We're thinking of doing them next week. Seems pretty late to me, but I can't think of any detrimental reasons not to do it. Anyone know of a reason why we should hold off 'till spring? We're in S.Ontario.