Finally, someone has persuaded Sepp Holzer to demonstrate how to make his traditional recipe for 'bone-sauce'. It's made by pyrolising bones and collecting the gooey mess that drips off them, and it's claimed that the smell will penetrate the tree and keep critters from damaging it for up to ten years.

I'm intending to try this very soon!

Link to the video below.

Here is a link that might be useful: Making bone-sauce