Promotes Strong Egg Shell for Layers Pure and Scent Free Full of calcium Works great in poultry feed Comes in heat sealed heavy duty bag Crushed Oyster Shells by Garden Naturals are great to have around the chicken coop. Layer can benefit strong egg shells while using crushed oyster shell. This product can also be used for garden fertilizer. All natural and scent free. ***Note*** Product may appear more granulated rather than flaky depending on batch.