You can use pure vinegar and add a bit of salt if you want. Do not use this on your lawn.
Spray them with vinegar, it kills to the root.
Becareful to not get it on the plants you want to keep, it wIll burn them.
1gallon vinegar, 1gallon lemon juice, 2 cups salt, mix well spray in hot direct sun kills everything nothing will regrow
I use a 1/2 bottle of vinegar, one cup of salt to two gallons water in a garden sprayer. Saturate the weeds till dripping. The object is to get down to the roots. Clean the cracks out and fill them in.
Hi Barbara - This is the most effective all-natural weed killer DIY that we use. It's even been featured on Hometalk! Hope this helps! Hugs, Holly
Boiling salt water
As the others, I use vinegar and water. I am told bleach also works.