Originally Posted by Slims

Um, you are probably going to pay more for your home made chemicals than you will if you simply buy some weed killer.

Bleach is easily turned into chlorine gas when mixed with the wrong acids, so you might want to avoid mixing it with your vinegar (though my chemistry knowledge has faded and I don't know what effect acetic acid will have). Salt will kill the weeds, but it will leech and will kill everything around them as well.