In relative's garden. She has a huge patch of the dreaded russian vine all intermingled with some nice shrubs she doesn't want to get rid of, and it's taken a real hold. We've cut the vines down to ground level as far as possible, untangled it and pulled it all out of the other shrubs (including a pyracantha - ouch!). We're going to get as many roots as we can out as well.
Is there something we can zap it with if (when) it returns? What worked for you?