It only requires a few materials that can be easily found around the garden, and will stop your plants from being eaten.

And then there are slugs. Slugs are beneficial to the environment too, but unfortunately, few gardeners are happy to see them ...

It's a really good sharp material that slugs and snails don't like crawling over. You could also use coarse grit or coarse sand as well. Copper induces an electrical current to flow through it.