we're about to start maintenance on a new commercial property. They just layed the bermuda sod the other day. There was very little prep prior to sod. They basically knocked down the weeds and johnson grass and placed the sod. So now there are weeds popping up especially around the edges adn between the squares. What would the best approach be for this to get it under control as fast as possible? It would be a waist of time to get the contractor to address this.