Immediate results with mechanical and no worries of a D.O. crash if you do the removal.

And Pond Frog is right about those rhizomes. I've seen some the size of my leg in Lake Mcqueeney where they are fully established and have taken over. Early in the growing season is the best time for mowing since they are basically running on empty after the winter.

If at first you don't succeed...look in the trash for the directions.