What non chemical can I use to kill weeds
I have brickwork in the ground next to my veggie beds However, even thought the *weed blocker* cloth was laid, a concrete bed was not underneath. If I recall, there was sand laid underneath the brick.
Is there anything I can pour over the brick to kill the weeds/moss that is in between the brickwork ? Preferably something not chemically as whatever is poured will leech into the ground and I don't want it to affect the vegetable beds.