Bind weed is the devil. I've been successful digging it up and manually removing the roots, burning and then tarping the area, extreme but it worked. That is in small areas, however, not larger than 20 square metres.
Discussion
I covered the whole back yard for the summer and killed most of it. Killing small spots with vinegar/salt/soap mix and removing roots. We then used cardboard to cover the dirt, placed new dirt on that and then mulch. Planted all native plants in new dirt. Small patch of grass for the dogs and area for chickens. I guess I’ll have to wait and see after winter what comes back.