Natural sedimentary clay having high absorbency features towards all liquids, chemically stable and inert, with high mechanical strength. Applied on the soil it creates a natural barrier against snails and slugs thanks to its capability to absorb large amounts of water, creating a dry environment, therefore adverse to the life of these terrestrial molluscs. Moreover the direct contact of them with the granules causes their dehydration, drying their fluids and leading them to go away without killing them.It can be used in horticulture and gardening at any stage of the production cycle, allowing natural crops without the use of poisons. It leaves no residues. For edible crops, it is advisable to allow at least 48 hours after treatment before eating the crop.