It's just treated with borates. Wouldn't use it in wet locations or for direct ground contact because it's water soluble and that would hinder its protection, b

It's just treated with borates. Wouldn't use it in wet locations or for direct ground contact because it's water soluble and that would hinder its protection, but it's far from toxic as you seem to be implying. Meh, even if it was some random pet project, it's not the worst way for them to spend their money / time.