Where I work we use roundup to spray around industrial areas. The problem is we have to spray multiple times per year. I was wondering do any of y’all use a yearly herbicide that kills the ground and keeps seeds from sprouting. I don’ t want to spend a big amount on the herbicide. Generic roundup cost about 50 bucks for 2 1/2 gallons, so it’s pretty cheap to use multiple times per year. Any help would be appreciated, thanks