I have read before that vinegar might work. I have no idea so that that with a grain of salt.

 

I brought in some “dirt” few years ago to fill in some sunken areas. Of course it came with plenty of weeds. Quack Grass was one of them.
What seem to work in the end is
Making sure my lawn had enough water. Started mowing at 3.5” and isolated Glysophate application.
I basically used the cotton glove over a rubber glove. Wet the cotton glove finger tips and applied to the unwanted plants like that.
Also manually pulled many of them.
Then I got on top of the Pre Emergent applications: No Idea if Pre Emergents are pet friendly ?

 

Just a suggestion but consider nitrile gloves next time as they are generally much more resistant to chemicals than latex is.

 

I've never seen anyone share such a success. I don't know if it's just the weather or the season, but my quackgrass has really slowed down this past month.

Luckily, a lot of my quack roots in the upper thatch layer and this time of year it's tillered a lot so when I detached, I ripped visually 80% of it out. The game is to keep torturing it until hopefully one day it's energy reserves in its rhizomes deplete. Or maybe that's just my wishful thinking.

Also I can share that Tnex impacts quack the same as KBG so if nothing else, it makes your fresh cut look last a few days longer