Of possible interest to the ping list..
Rouundup is so expensive, if you want to kill everything and NOT spend $40 gallon you could use plain old gasoline- but that would be illegal so I am not advising that to anyone. But it works.
But I would never use it to kill all the stuff growing in the cracks in my driveway or in between the brickwork in my walkway (but never around a shrub or tree that you don’t want to die. )
Because that would be wrong, to do on my own property when no one was looking
Dang, what can you drink these days?