This disclosure relates to systems and methods for providing a barrier that minimizes or prevents mollusks, such as slugs and snails, from entering a garden or other vegetation area. A barrier may include a dry chamber in an inverted U-shaped area configured to retain rock salt or other mollusk deterrent. Mesh may be used to retain the deterrent within the inverted U-shaped dry chamber. In various embodiments, a bead or other feature may help prevent liquids, such as water, from entering the dry chamber.