Painted, i never heard about just using vinegar! I think the salt is for more permanent weed death and the soap is to help the solution stick, but i'm just now learning about all this stuff.
When we were jw and running around doing "God's work" we just let our yards look terrible. We lost one house to bankruptcy because we were so stupid.
Now we have been in our own house for 5 years, we're feeling responsible and want to help the neighborhood look good.
Marina