Is their any organic weed control products that actually work as kill the weeds and not the lawns. I have been using the organic fert and such at my home but I need weed control. I mow at 4 inches as needed I aerrate and overseed every fall. I have been using dimension in the spring 1 app only I know it is not organic but I have to do what I can. Now I need a organic weed control this fall I am gonna top dress the lawn and add Microrhyzial bacteria can't spell that. I have 80 k of turf .