In article .com,
writes:

As someone said, it might not be glyphosphate; if I was weedkilling
paths, I'd use 'Pathclear'; that kills growing plants and also does
something to the soild that inhibits seed germination. Used to use
symazine (sp.?) as an active ingredient.

Well, I've phoned and asked what it was, and I'm waiting for
a call back, which didn't happen today. They'll be getting
a reminder call tomorrow.

--
Andrew Gabriel