Slug Shield is a patent-pending organic slug and snail deterrent. Slug Shield's multi-strand flexible copper bracelet wraps around the base of plants to protect them from slugs and snails all year long. Unlike a copper-based spray that you have to periodically re-apply, Slug Shield is impervious to the elements. It creates a physical and an electrochemical barrier that naturally repels slugs and snails without impacting the environment. Slug Shield is easy to apply and (unlike copper tape) expands with plant growth, so it will keep your plants slug-free as they continue to grow and thrive.