So, I had already tried everything until I stumbled across this article. It works really wonderful. Since I have a rock edge to my bed, 2 strips were stuck next to each other tightly. In a recession, I had read that someone has then set nor the 2 contacts with a slight voltage from a small battery and it worked. Finally, no more snails in salad and vegetables. A small drawback, the double-sided tape on the copper goes off when wet and you have to watch that you do not tear it while working. Otherwise fully recommended.
