They should be transferred to boxes or pens at a density of 10-15 snails/m2. The soil should be loosened to facilitate egg laying. The breeders' food must be rich in crude protein and calcium. Any eggs found on the surface must be buried promptly to a depth of 1 to 2cm. Before hatching, the soil on top of the clutches might be loosened or the breeders must be removed to their growing pens soon after the hatchlings emerge. Adults no longer required for breeding and are kept in fattening pens until ready for sale or consumption