I got this from a friend.
1 gal vinegar
2 cups Epson Salt
1/4 Cup of Dawn Dish soap.
I haven't tried it yet, but she said it works good. Much cheaper then RoundUp.
I mixed up a gallon and used it on weeds and grass. It wasn[t the time and effort as the main culprits, pigweed and grass, only wilted for a week only to come right back.
Yep, I tried something similar, only using table salt instead of Epsom salts--don't understand the epsom salts since they're often recommended as fertilizer. The weeds loved it.