Bought this item a few weeks ago and got to work wrapping a raised veg planter with it. I put two layers of tape, one above the other with no gap in between as I've read on the web that the little slimy bu**ers can actually arch their bodies over a thin strip of copper. Hopefully now the amount of arching required will be too big even for the biggest slugs. Must say that so far the tape is doing the trick, no attacks from slugs or snails and I've got hundreds of the them in my garden.
The tape is super sticky so grips really well and is a doddle to put on. It even seems to repel ants, which are another headache for me. Only thing I would suggest really would be wider tape so that no doubling up would be required, but I guess it's easy enough to do yourself.
Very happy with it, would definitely buy more if needed. It clean, green and no nasty horrible chemicals around my veg :)