Posted: 01/10/2013 at 11:00
Sadly they have stopped selling the product (used to be Weed-out I think). All you can do is very carefully spray the emerging stems with a translocatable weed killer. I add a little liquid soap to the solution as it makes it stick to the grass stems.
I have been cleaning out one of our borders that last few weeks. So far I have filled 12 compost bags with couch roots. And I can gaurantee that I have missed almost as much as I have removed.