How to kill weeds
Here's what I use:
pure white vinegar works.
I use one cup of vinegar, one cup of salt to two gallons water in a garden sprayer. Saturate the weeds till dripping. Do not use on lawn or in garden. Will kill everything. Boiling water on weeds in lawn and garden.
This article on Natural Weedkillers is really helpful
2 cups white vinegar
¼ cup salt
Squirt of dawn
Mix in a spray bottle. If you have a larger area, you can mix in a garden sprayer with larger quantities. Use when it will not be raining for a few hours so that it isn’t washed away.