Ready-to-use repellent granules designed to prevent snails from invading vegetable, ornamental, and container crops in both horticulture and outdoor gardens. The porous lava granules act as a mineral carrier for geraniol and lavandin oil. The formulation works with a double sensory effect: it creates an odor barrier while simultaneously masking the specific plant scents of potential host plants, so snails can no longer locate the crops as a food source.