I treated it with this stuff, it says its good for ground contact and docks in the water for 30 years. I have no idea if its that good for that long only been using it for about 4 years now. Its pretty much the same thing as they use on "pressure treated" wood and its pretty vial stuff. Oh, and bonus... makes it like a nice green camo color!!
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That makes sense. I've used that too and agree, it can be pretty vial.