X2 on the 2 4 D. It doesn't kill half of what I see on your driveway, only broadleaf. And J-Mech is right on the glyphosate as well. This is what you need to kill everything, and like he said, nothing that you can get over the counter is going to last you 12 months. For a cheaper and less toxic solution, you can mix some clorox in water and spray it on them. It will kill everything it touches as well so long as you don't dilute it too thin. This won't last as long as round up though.
If you are spraying this stuff, don't do it without a respirator. This stuff is a bad carcinogenic.
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