I'll more directly answer your question, without chasing rabbits....

I'm using it for the first time this year & so far it seems to work very
well. It's still early, so I only have onion sets & cabbage in the ground,
but nary a weed is popping up. Yes, follow the directions.

OK, I'll chase the rabbit a little bit. I do mulch my veggie garden with
tons of leaves & grass clippings, but the weeds still take over if you give
them half a chance.

Robert