Time to stock up on Roundup concentrate. Needless to say, I have many, many, bottles. I even still have a boatload of chemicals that Clinton banned - enough to get me through my lifetime here (and they store great).
If you have a feed mill (or whatever) in your area (where farmers get their materials), try "Credit" brand glyphosate.
Much less expensive. (You aren't paying for the big "Roundup" brand name.)