I mow for a check cashing chain in KY and the mowing part doesnt take long, but all of their locations are filled with weeds/ grass in the landscaping, cracks in the parking lot,etc. It takes us awhile to trim everything but if the weeds were kept under control we could be outta there in 30 minutes. I heard about soil sterilizer and it claims to keep anything from growing for a whole year where it is applied. I will not be doing the application because I do not have the license to do so, but I will be contracting it out, but if they only have to apply it once a year, they may not be interrested? Does soil sterrilzer really work that well? does it just kill small stuff or will it take out larger bushes and shrubs? My contact at the chain said we could sub out the spraying work and charge them accordingly. Is soil sterilizer an expensive route to go? Thanks for the help.