I have what I believe is creeping bent grass popping up in random places in my yard (see attached image) and I have read that this is very invasive so want to stay ahead of it.  I have applied round up using an eye dropper to some of it but it’s a teadeous way to address it.  I have read a little about Tenacity, which sounds like it will kill/eliminate bent grass without damaging the Kentucky Blue around it.  Looking for some advice on the best way to eliminate and prevent creeping bent grass.