Keep egg shells in open container in fridge. When the container is full, crush shells into small bits and sprinkle them around base of your plants. Sharp eggshells will deter slugs, snails other bugs & adds touch of calcium to soil.
Like the raised beds.Protect your garden and vegetable plants from slugs and snails with this adhesive copper barrier tape. It causes a reaction similar to an electric shock when the pest makes contact with the copper.