DIY Miracle Grow and Roundup

[Major Nikon]

5. Vinegar is far worse than Roundup in virtually every way

Vinegar is often promoted as an alternative to Roundup, but this is a very bad idea. 20% vinegar is highly corrosive, almost twice as toxic, very dangerous to use, more harmful to the environment, and not nearly as effective.

Note the MSDS of 20% vinegar, marketed as a "natural" alternative and compare it to the MSDS for Roundup. Most of the "DANGER" and environmental warnings on the former speak for themselves. Also of note is the toxicity, expressed in LD50 (median lethal dose), is almost half that for Roundup, meaning it's almost twice as toxic.

I don't recommend trying to use 20% vinegar at home unless you have appropriate gloves, respirator, very good eye protection, and an eye wash station. You can buy all sorts of chemicals for home use that have no business being used for home use.