Thank you. I have a gallon of vinegar in the garage.
LOL, you could consider my weed killer. ONLY if the thing you want to destroy is not near any thing you want to keep - by like 6 -12 inches.
Dig down a bit around the stem of your target - to expose the top of the root system if possible, or even close should work. Then get a tea kettle of BOILING water - BE VERY CAREFUL WITH THIS STEP - I usually grab mine while it is actually boiling - and take it out and pour it around the base of the plant and/or any exposed roots. Best if you can get it close to/on the roots if it is a big mature plant. BE CAREFUL OF STEAM blowing back on you!
It is organic, and trust me, weeds HATE boiling water hehehhe. If it is a very large plant you may need to repeat after 48 hours and or do two kettles. It is satisfying.
1 gallon of white vinegar (20% if you can get it, but household white vinegar will work), 1/4 cup of table salt, and 1 tablespoon of dish soap as a sticker (Ivory liquid works best). Mix it up in a pump sprayer and spray it on the plants. It will kill the jimsyn weed and anything else it touches. Re-apply after rain or 60 days whichever comes first.