To say it in one word: Scrap! You might as well put wooden skewers or grilled Würtstchen in the earth, this would probably have more effect than the "Wühlmausschreck". The garden looks worse than before, and if I could I would post a photo here. Probably other interested parties would but think well, if it were a field and not to my garden. Bought a total of 3 pieces and placed right next to each other. One of the products was even unearthed from the voles! Production costs are estimated well below 1 EUR, so it goes to the manufacturer probably just like the voles: It comes from the laughter no longer out that anyone really believes the thing would even sell something and the product bought. Absolutely not buy !!!