Crushed oyster shell is a calcium supplement for laying hens. It is especially important for hens who free range or enjoy foods other than their layer pellets. Crushed oyster shells promote strong egg shells and optimal health for your laying hen. Our product is 100 pure crushed oyster shell, sourced from Canadian oyster farms – we don't add any fillers. Our hens love our oyster shells and yours will too! Oyster shell should be provided "free-choice" in a separate container in at least 2 different locations. The average free-range hen will consume about ¼ pound of crushed oyster shell per month. Therefore, a 2 pound package is expected to last 8 hens approximately 1 month. Our product is proudly made on Vancouver Island, Canada100 CANADIAN – Our product is sourced exclusively from Canadian oyster farms and proudly packaged on Vancouver Island. You get 100 pure shell – no fillers added. Our oyster shell is thoroughly washed and heat-treated. HENS LOVE IT – Our hens love it and yours will too. One laying hen will consume approximately ¼ pound of crushed oyster shell per month. Oyster shell should be provided "free-choice" separate from the feed in at least 2 different locations. PROMOTES STRONG EGGSHELLS – Oyster shells promote strong eggshells, provides calcium for the laying process, and optimizes your hens' health. CALCIUM SUPPLEMENT FOR LAYING HENS - Providing a calcium supplement is especially important for laying hens who free range or enjoy foods other than their layer pellets.