We fertilize regularly with a mixture of Nitrogen, Potash, and Phosphate. We also use a pre-emerge which discourages the growth of weeds before they start. Top Turf uses very little herbicide on farmed turf because the intense schedule of mowing, watering, and fertilizing naturally discourages the growth of weeds. However, sometimes it is necessary to use herbicide on the areas that need it. Herbicide poses no threat to grass, pets and humans, as long as it is used as directed. If you choose to treat your lawn at home, it is important to follow the directions on the label because incorrect use could be harmful to other plants or animals.