Copper does NOT keep slugs out of your garden

I read on a website discussing natural ways to get rid of slugs that they will not cross over copper. I have a bunch of beading wire that is 100% copper so I started making rings around my plants with it. Then I saw a slug. I surrounded it with the copper wire. The slug slimed its way right over the copper wire like idgaf. I stopped putting copper wire around my plants and gathered the rest back. Dont believe everything you read on the internet and copper is not the solution for everything.