if there not many.....use pure white vinegar in an old pointed top mustard container.....just drip it at the base...............................................if it is the whole lawn you might want weed and feed....just the directions carefully because they have different kinds for different times of the year....................wear old clothing, gloves, mask, hat and goggles, keep children & pets off where you have placed this under it has rained hard to take it in the ground.