Caudata Culture Articles - Wood in Vivaria

This link was provided in many posts about the types of wood that you can use in a Viv and how to clean it. It states that there are several types of wood to avoid and I was wondering if this applied to tree frogs as well. I have a wooded backyard full of oak trees and some pine trees, so I would have ample supply of natural "furniture" to put in my viv. But this article appears to discourage oak and pine trees.

I don't want to hurt my growing gray tree frogs, so I thought I would verify before purchasing wood.

Thanks!
Megan