Last year I sprayed 3 plots and mowed 3 plots. My experience was the sprayed plots performed better, but both resulted in really good plots. In all honesty, I probably wouldn't have sprayed any of them if I wasn't trying to eliminate Johnson grass in 3 plots, but I'm glad I did. As of right now, I'm planning on spraying 4 plots this year and mowing 2 clover plots. Of course, this plan may change depending upon the clover.