We have a small area (around 5'x10') behind the house that is just massive a breeding ground for weeds.
We want to make it so nothing grows there. Ever. Not grass - nothing. If we could cheaply cover it in cement we would.
I've tried a suggested recipe of vinegar, salt and dish soap and that kind of annoyed some of the plants. I know it can require repeat uses but given how little damage I'm seeing, it would take a dozen applications I feel like.
So, what do I do? We have dogs so I want something non toxic or, at least, would stop being toxic quickly.
Also, in case someone asks: the ground is incredibly uneven and filled with all sorts of rocks and metal pieces (don't ask me from where) so the use of a weed whacker is extremely limited. I wouldn't mind, I don't know, using a shovel but only if the results were permanent or long term.
Thank you!
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For non toxic on gravel I would go fire.
https://www.youtube.com/watch?v=NgE0V_ZepoY
You can use a small torch too, and they aren't too expensive.