I got this copper foil tape to put around the top of the plant pot and the slugs won't cross the copper tape. We have so many slugs on our back concrete patio and they get into the plants. With this copper tape, I can save my plants from being destroyed. It is super easy to install and so convenient to use. The copper tape is UV resistance, flame retardant, moisture resistance, chemical, and corrosion resistance so it can withstand being used outdoors.