Customer of mine is an exterminator. He got me some Hyvar XL for PERSONAL use. I have an area beside the house that I want to kill off the vegetation and put rock down. He told me this stuff was a sterilant and would be better than round-up. The area is not conducive to spraying with round-up often due to steepness. Plus, it faces to road and any weeds poking through the rock will show bigtime. Anyway...I got this stuff, but it didn't have the insert for mixing. How should I mix it to use in a regular sprayer. Also, will this do the job I am looking for? There is no ground water dangers that I can tell. Any help would be appreciated.