Natural slug controlThis entry was posted in gardening on June 18, 2010 by Ian Pattinson I’ve been wondering about this for a while- When slugs make contact with copper, a toxic reaction occurs between the copper and the slime creating an electric current, and they get an electric shock which repels them. The benefits are that it works wet or dry, is very effective, and doesn’t kill the slug. Share this:FacebookTwitterRedditTumblrPinterestLinkedInPocketWhatsApp