bone sauce to keep voles from root crop(potatoes)

Has anyone tried sepp's bone sauce for voles? They ate every last potato this past summer and I really don't want to have to trap them all year long. So, I was thinking about painting some bone sauce onto some branches and burying them shallow along side my potatoes next time I plant. Just wonder if anyone else has successfully kept voles from root crops with this sauce.

Hey Adam
Great question and love the idea. I have faith in your idea with the branches. I say go for it and there is a good chance that you will have better luck next year. Voles population are cyclic so every three to four years boom. So fingers crossed it wont be as bad next year no matter what. Here is a link where I got my info from and is not permi but does have a lot of info about voles.
http://extension.missouri.edu/p/g9445