Buy it where you are going to burn it
I had never thought of firewood as being vectors for disease and/or insect infestations. But, apparently this is a real concern.
Here is a site that lists firewood vendors by zip code, thus allowing would-be purchasers of food wood to purchase locally-produced firewood.
Mark
Been around for a very long time.
The first time I visited a friend in Idaho the place was in a thick pine forest. A couple of years later I returned and all the trees were dead. It was an unreal landscape - all the way to the top of the mountains And yes on both occasions there were relevant signs in many places.
These are the same reasons why all items made from any type of wood are inspected at the border here, and either treated (at the owner's expense) or destroyed. I have even declared wooden picture frames, only to be told that they were not wood, just made to look like wood.
Yeah! I felt a bit stupid!
Lifey