On Sunday, February 16, 2020 at 2:09:59 PM UTC-5, Ralph Mowery wrote:
In article ,
says...

Have you tried using less? For general broadleaf weeds I've been using
4 oz into a 3 gal backpack sprayer and it works very well. Mine is the
same, or about the same concentration, 40 something percent.

If I was trying to kill something more difficult, eg poison ivy, vines,
etc, or it was cooler, then I'd use a higher concentration like you're
using.





I don't spray much so I just used what I recall as the highest on the
instructions. I just wrote it on the outside of the plastic jug so I
would not have to look at the instructions. A standard size jug of the
stuff will last a couple of years. I don't know how long it is suppose
to last in the jug once opened, so no more than I use I like to get a
fresh supply every couple of years. Most of what I was trying to kill
when I first bought it was the poison ivy. There was some in the woods
around the house.

I think it lasts in the jug a very long time. It took me ten
years or so to go through the first 2.5 gals and no difference in
performance.