Posted: 09/07/2013 at 13:34
Best weedkiller is glyphosate mixed with a bit of fairy liquid to make it wet, otherwise with mares tails it just rolls off. Stamp on the mares tails a bit to break the stems and make is easier for the glyphosate to be absorbed.
Constant mowing ( at least once a week) in a lawn will kill it.
No idea about the barrier , never heard of it.
Talk to your neighbour about clearing his side at the same time.