How To: Cast Iron Skillet Non-Stick and Lasts a Lifetime Works for mice and rabbits and goats. First you start with a cast iron kettle and bury it a bit and put a cup of water in the bottom. The fill another kettle with bones, put a screen over it and then plop the bone kettle upside down on the other kettle. Then pack clay around the edges to make a good seal. Then Pile up some dirt and build a big fire over the whole thing. attempt at drawing sepp holzer's bone sauce contraption Keep the fire going for an hour or two and then let it sit for a day. Then collect the nasty gunk from the bottom. Apparently this smells awful. Smear a little of this around the trunk of any tree and animals won't ever touch that tree. you can dilute the paste with any edible oil paint on tree up and down the guy (Sepp Holzer) who invented this, is the same one who started the Hugelkultur movement hugelkultur: the ultimate raised garden beds
It must smell really bad if a goat won't eat it, goats eat everything. It would be nice if it would deter elk. People could make this goo and paint the fence posts around their gardens.
So you are blackening it with a carbon layer? That is similar to how you add carbon to iron to make steel.