Why Buy OYSTER SHELL
Give laying hens the natural calcium boost they need with Mile Four Oyster Shell. Made from organic, all-natural oyster shell, it helps chickens produce stronger, thicker eggshells while supporting overall health and longevity. Perfect for hens 20+ weeks old, this simple supplement keeps flocks healthy & eggs durable—naturally.
Key Features:
- Supports Strong Eggshells: Eggshells are 94–97% calcium carbonate—this supplement replenishes what hens lose during daily laying.
- Essential Calcium Source: Strengthens bones, reduces egg breakage, & supports consistent, healthy egg production.
- Boosts Flock Health: Promotes stronger bones, improved cardiovascular function, & overall vitality in laying hens.
- All-Natural Formula: Made from 100% natural, organic oyster shell with no additives, chemicals, or fillers.

