Martin Brown wrote:
Terry Pinnell wrote:

I'm fighting an ongoing battle against weeds growing through the
sand-gaps in out brick paths and patio. I spent the weekend clearing
them, this time with a high pressure hose, and refilling with fine
sand. So now I want to do whatever I can to PREVENT their
reappearance. Or at least postpone it for a long time.


Classic sodium chlorate application - renders soil unfit for growth. If
you can live with the salt marks that will inevitably occur.

Snip
Regards,
Martin Brown

Sodium chlorate does not work for me. It barely kills the weeds (some
survive) between the paviours, and within a couple of weeks the dead
ones have been replaced by new growth. :-(