Here in Central Texas, there are bugs which carry oak wilt, so moving firewood from area to area is a big no-no.
Instead, what I've done is get cheap, untreated 4x4s, the low quality, knotty stuff, have it carved into 18" lengths, and use that for firewood. Since it is kiln dried, there will be no nasties lurking within the recesses. Just make SURE it isn't treated due to the chemicals thrown out when burned.
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