ISO landscaper or weed person who sprays for weeds with the commerial sstuff the highways and freeways use..My son had it sprayed on his lawn about 2 yrs ago and it lasted for the longest time..he cant remember who he used...but it goes on GREEN and disappears by the next morning but really gets those nasty weeds and keeps them away. If someone uses it or knows of someone please contact me would really like it thanks