This investment is worthwhile for the garden! But one should keep in mind when buying, that a defense bar is only effective within 5-8 meters. I had ordered for 3 150sqm lawn. And it seemed within 2 days. The moles are now moved to the neighbors. In the operating instructions is true that one should bury the rods completely in the ground, because you can then pass over with the lawnmower. But on an owners' meeting, we have all come to the conclusion that the solar operation of the rods could no longer work if the grass is too high. I have had good experiences with these rods, but here they really only work within 5 meters. That is not in the statement. A friend had given me the tip ...