David in Normandy wrote:

Just don't buy Roundup or pre-diluted "read to use" glyphosate as you
will be paying something like ten times the price (per unit) as the
generic concentrate.

Where do you get the generic concentrate?
I haven't seen it on sale in any garden centre.

--
Timothy Murphy
e-mail: gayleard /at/ eircom.net
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland