Not very good had to put down 3 times before it worked found hard large Crystals at the bottom of the container apparently solution crystallizes and you have to break these crystals up that's why it take so long for it to kill
I have tried using this product twice. First at a dilution of 6 oz to one gallon and the second at 12 oz to one gallon to kill a mixture of well established brush growing along my creek.
The first application did little more than wilt some leaves and kill some smaller plants. The second seems to have been a little more effective but I wouldn't call it a success either. Results also take a long time to appear.
Going to try full strength on my next effort but I can't say it will be economical for the size of the job I'm trying to kill. I won't purchase this product again.