They sell gadgets to defrost locks, but who buys one in advance? Saw one just the other day. They have a slim rod, about 2" long ... which the gadget heats up a little bit. You shove the heated rod into the lock and voila! On the other hand, without that, you have to hold your warm fingers over the lock until the fingers freeze and the lock UN freezes. But mine hasn't frozen in ages, so no gadget.
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