Gonzo Gonzo Copper Stopper Slug Snail Copper Tape, 30 FT Gonzo Copper Stopper Slug Snail Copper Tape, 30 Feet The Gonzo Copper Stopper acts as a barrier to slugs & snails. The copper surface reacts with their secretions, providing an unpleasant sensation and effective deterrent. Repels Slugs &... MSRP: Was: Now: $13.99 Add to Cart