On Fri, 31 Aug 2012 15:37:44 +0100 (BST), "Dave Liquorice"
wrote:

On Fri, 31 Aug 2012 15:01:01 +0100, Chris J Dixon wrote:

Think I'd rather use cheaper a concentrated genric glyphosate rather
than a watered down expensive branded glyphosate like Roundup or a
path weed killer.

Recommended sources?

Any agri merchant rather than garden centre shed.

Yep. A third of the price for off-patent stuff.