Nothing kills it. I poured kettles of boiling water every foot drowning the roots hoping to kill it but was unsuccessful. We thought the guys we hired dug it up was successful so we added black weed fabric (prevents root disease growth penetration) but it grew through two layers of lawn weed fabric.
My first EP gave me a great example of afib. He said imagine mowing your lawn, the grass returns. Grass is like afib- you need to burn one’s heart tissue similar to rototilling one’s lawn weeds to get rid of it…but new spots keeps returning…thus touchup ablations.