I obtained this product to avoid the high cost of Round-Up. I needed to kill about 3000 square feet of St.Augustine Grass before applying mulch. Although this product is considerably less expensive, it is painfully slow as to the rate of kill. I expected to have to re-spray , but not to have to wait 4-5 days to see where kill had taken place. If you are in a hurry, get something else. As it is I have had to respray 3 times to get complete kill. Still it was cheaper than round-up so if your labor cost is free and you have patience,OK.
I applied this to the weeds growing in my crushed rock yard about 10 days ago. I'm just starting to see some wilting. I actually used slightly more per gallon than it called for to get the ratio the same as Roundup. I'll be contacting DoMyOwnPestControl if they don't die soon!