My problem with this copper foil tape was that I read a lot of articles on how to keep snails off my potted plants, especially my moms, and many other other areas. So I wrapped all my pots in strips of this copper tape and went outside in the evenings when they started slipping out and there were snails in my pots that crossed the copper tape with no problem and were all in the plant. Since this tape prevents snails from crossing anything, it doesn't work. I know you can build traps to kill snails, but I don't like killing anyone. And on the other hand, this copper tape is VERY thin so be careful wherever you use it as it tears and twists very easily. But it is very nice!