aristotle - 10:21 pm on Jan 20, 2014 (gmt 0)
I would then notify site owners to get those links removed. Disavow the links that you couldn't get removed.
In my opinion trying to get other people to remove backlinks is an inefficient use of time. It's a lot faster and more convenient to use the disavow tool for all of them. You can spend the time you save by working to improve your site.