I have been been burning firewood for many years, and I just got a good source for Black Locust. This wood is God's answer to man made pressure treated wood. It does not rot, and is naturally bug resistant. When I split other types of wood, the little critters sometimes come crawling out like crazy, but never with Black Locust. Even if it has been sitting on the ground for years. Bugs may live directly under the bark, but they never (or very rarely) bore into the wood. It is truly amazing stuff. And it has a BTU rating very similar to coal!