Here is a research article from Finland that establishes the efficacy of pine tar as a moose repellent. Unfortunately, I can't cut and paste the relevant portions of the article so a screen shot of the most relevant portion will have to suffice.
![Image](http://i565.photobucket.com/albums/ss100/geoanmel/5D3DC3FD-A120-4F62-A9BF-ED32A0DF4B39-7808-000000EA2458EEB5_zps67795ce5.jpg)
[url]https://helda.helsinki.fi/bitstream/handle/10138/15647/26-No%203_Löyttyniemi.pdf?sequence=1[/url]