re: Lawn being taken over by torpedo grass

I had to post on this...I learned about this unstoppable grass in about 2012 in my last home where I introduced it after ridding my yard of Dallisgrass. The rhizomes are the tough(near impossible) to kill part. Tilling the lawn will just spread them out. I'm experimenting on my lawn (1600 sqft of it). I have gone the nuclear option--which the wife is loving . The Torpedo grass has just laughed at my attempt and said thanks for killing off the St. Augustine that was in its way. I'm going to try some other chemicals (like Fusilade II and Drive XLR8) other than glyphosate and dicamba as they seem to just kill the top growth and not the rhizomes. So, I've sprayed it, burned it, and covered it with little success. I haven't given up just yet. I'm probably going to switch from St. Augustine to a fine blade Zyosia or Bermuda grass to have any chance to fight this horrible grass. I'll report back over time with my results.