Our Lawn Watering Tool "greens up" brown dry patches. Even though the sprinklers go on daily, only the surface soil may be receiving the moisture. Often, drought, excess thatch build-up, faulty sprinkler patterns or hard soil conditions can cause the soil to become hard and impenetrable, causing grass roots to literally die of thirst. This tool delivers water directly to the root zone of lawns and plants. Saves water by eliminating wasteful run-off or evaporation. Encourages deep root growth. Drills its own holes, avoiding digging. Leaves beneficial aeration holes. Yard Butler guarantees all Yard Butler tools for life against any defects in manufacturing or materials.