Glyphosate type ones have worked the best for me, they kill the whole plant
including the root. They can take a few weeks to work and you might need a
second application on really tough weeds. Roundup and Tumbleweed are the
most commonly available, with the latter being the cheaper but just as
effective IME.

Jim


"Ben" wrote in message
om...
Quite simply ... does anyone know what the most effective weed killer
is?

I've got a huge patch of weeds and nettles at the bottom of the garden
which I've finally got around to getting rid of.

Cheers in advance.