re: Is this the dreaded torpedo grass?

If it’s mixed in with your good lawn grass like centipede, St Augustine or bermudgrass you can kill it with MSM Turf, that been discussed in other threads, without killing the “good” grass. I did have a bit of a bahiagrass problem, but eliminated it MSM Turf. Or if just along your foundation where you don’t want any grass at all, just use glyphosate.