Part of our garden in being overrun by Russian Vine which is coming from a neighbour’s garden. Our bamboos are being strangled and the vine is scrambling through the tree canopy. No sooner do we take it back to the boundary than it returns. Our neighbour invited us to chop it back on his side but it is rooted in an impassable thorny thicket. I don’t like using chemicals but I’m desperate! Any ideas?