>>1406514Exactly. The logs you are thinking of were boiled in creosote. Which is particularity nasty stuff. Those railway ties can only be destroyed with enough rainfall over a very long amount of time. It is a rather slow process to wash off the creosote.
If you try the wax thing, boil them until there's no bubbles at all coming out of the wood. Also, be careful since melted wax is rather flammable. If something catches on fire or you spill it and it flames up, just smother it. Don't put water on it or it will make things far worse (pic).