I have a mostly gravel yard and the weeds come out like crazy during the rainy season. I'd like to know a nice homemade weed killer that's quite potent, something that will kill the weeds with only one or two squirts from a spray bottle.
I've heard boiling water works well but I don't feel like boiling that much water.
After doing some research I found that salt, vinegar, bleach, and alcohol work best. Now the question is what combination of the above (or any that you may know) is the most potent? Any chemists here? Salt is neutral I think, since its what you get when you mix a base and an acid. Bleach is an oxidizer, vinegar is a...acid I think. Alcohol is..special?
I'm thinking ~2/3 vinegar, 1/3 rubbing alcohol, and maybe a sprinkle of salt and bleach?
Although I think both salt and alcohol may be redundant, since (I think) they both kill the weed by drawing out its water. Anyone know which is more potent?