I've seen Pinterest posts with "recipes" to kill weeds naturally and decided it was a good time to give it a try, seeing as my driveway looks like a path in a forest and there is poison ivy growing up the tree by my back porch. I luckily (knock on wood) don't get poison ivy, but since Eric mows the lawn not me, I felt it would be a good idea to get rid of it so he doesn't get it.
The "natural" recipe for weed killer is really simple.
1 gallon white vinegar
1/2 cup salt
few squirts of dish soap