---
product_id: 741921610
title: "Mile Four Oyster Shell for Chickens - Calcium Supplement for Chickens, 100% Natural Limestone Calcium Carbonate, Strong Eggshell & Bone Booster, 4 lbs"
brand: "mile four"
price: "469.99 DT"
currency: TND
in_stock: true
reviews_count: 5
category: "Mile Four"
url: https://www.desertcart.tn/products/741921610-mile-four-oyster-shell-for-chickens-calcium-supplement-for-chickens
store_origin: TN
region: Tunisia
---

# Dual-action fine & coarse calcium release Stronger, thicker eggshells 100% natural calcium carbonate Mile Four Oyster Shell for Chickens - Calcium Supplement for Chickens, 100% Natural Limestone Calcium Carbonate, Strong Eggshell & Bone Booster, 4 lbs

**Brand:** mile four
**Price:** 469.99 DT
**Availability:** ✅ In Stock

## Summary

> 🥚 Elevate your flock’s eggshell game with nature’s calcium powerhouse!

## Quick Answers

- **What is this?** Mile Four Oyster Shell for Chickens - Calcium Supplement for Chickens, 100% Natural Limestone Calcium Carbonate, Strong Eggshell & Bone Booster, 4 lbs by mile four
- **How much does it cost?** 469.99 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/741921610-mile-four-oyster-shell-for-chickens-calcium-supplement-for-chickens)

## Best For

- mile four enthusiasts

## Why This Product

- Trusted mile four brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **24/7 Calcium Power:** Fine particles deliver instant calcium, coarse particles ensure steady overnight release.
- • **Rock-Solid Eggshells:** Boost your hens’ calcium intake for eggs that won’t crack under pressure.
- • **Bone & Health Booster:** Strengthen bones, improve cardiovascular health, and support immunity naturally.
- • **Effortless Feeding Routine:** One pound per hen per month—chickens self-regulate intake for optimal health.
- • **All-Natural & Additive-Free:** Pure oyster shell limestone—no fillers, no additives, just clean nutrition.

## Overview

Mile Four Oyster Shell is a premium, 100% natural calcium carbonate supplement designed for laying hens 20+ weeks old. Combining fine and coarse particles, it provides both immediate and sustained calcium release to strengthen eggshells and bones, while supporting overall chicken health. This additive-free, environmentally friendly product ensures your flock produces thicker, healthier eggs with reduced breakage, making it an essential staple for any serious poultry keeper.

## Description

Oyster Shell is a premium source of calcium for building stronger egg shells. Provide to laying hens around 20+ weeks of age. Oyster Shell is rocks with nothing added.Specifically, 100% natural limestone. Oyster Shell is a blend of fine and coarse untreated calcium carbonate (CaCO) mined from limestone.Fine particles provide an immediate calcium supply while coarse particles provide a slower, steady calcium release. A mix of fine and coarse provides a consistent calcium release into the hen’s bloodstream overnight providing strong eggs and stronger bones. Eggshells are 94-97% calcium carbonate. Oyster shell is an organic, natural way to give chickens the calcium boost needed to produce strong eggshells that will not break.Stronger Eggshells: Get stronger, thicker, healthier eggshells from laying (20+ weeks) chickens by boosting their calcium with oyster shell organic, all-natural calcium booster Happier & Healthier Chickens: Strengthen bones (reduce bone break & damage), bolster blood vessels, boost immune systems, improve cardiovascular function & reduce egg breaking with oyster shell 24/7 Calcium Boost: Coarse limestone provides a consistent calcium release into the laying hens bloodstream overnight & the powder provides an immediate calcium boost - perfect for strong eggshells Laying Chickens Need Calcium: Eggshells are 94-97% calcium carbonate. Oyster shell is an organic, natural way to give chickens the calcium boost needed to produce strong eggshells that will not break

Review: Quality calcium for your laying hens - Excellent additional source of calcium for laying hens and they love it. Will have to set up routine shipments.
Review: Great price and fast delivery - It a great dietary supplement for your chickens

## Features

- TASTE & SEE THE DIFFERENCE IN YOUR EGGS: Or our humans will make it right
- STRONGER EGGSHELLS: Get stronger, thicker, healthier eggshells from laying (20+ weeks) chickens by boosting their calcium with oyster shell organic, all-natural calcium booster
- LAYING CHICKENS NEED CALCIUM: Eggshells are 94-97% calcium carbonate. Oyster shell is an organic, natural way to give chickens the calcium boost needed to produce strong eggshells that will not break
- HEALTHIER FOR LAYING CHICKENS: Strengthen bones (reduce bone break & damage), bolster blood vessels, boost immune systems, improve cardiovascular function & reduce egg breaking with oyster shell
- 1 CHICKEN = 1 lb. PER MONTH: Laying chickens eat oyster shell as needed (similar to grit) & will not overeat. Quantity varies by breed & weather; 1 lb. each month per laying chicken is average

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07SG6ZGFB |
| Additional Features | Environmentally Friendly, Natural Product |
| Age Range Description | Adult |
| Age range (description) | Adult |
| Animal Food Diet Type | Raw |
| Animal Food Ingredient Claim | Additive-Free |
| Best Sellers Rank | #46,830 in Pet Supplies ( See Top 100 in Pet Supplies ) #709 in Bird Food |
| Brand | Mile Four |
| Brand Name | Mile Four |
| Breed Recommendation | All Breed Sizes |
| Container Type | Bag |
| Customer Reviews | 4.5 out of 5 stars 162 Reviews |
| Flavor | Unflavored |
| Flavour | Unflavored |
| Global Trade Identification Number | 00737488079470 |
| Item Form | Solid |
| Item Weight | 4 Pounds |
| Item form | Solid |
| Manufacturer | Mile Four |
| Manufacturer Part Number | oyster_shell_4 |
| Number of Items | 1 |
| Occasion | Birthday |
| Package Size Name | 4 Pound |
| Product Benefits | Strengthens eggshells and promotes chicken health |
| Recommended Uses For Product | Calcium supplement for laying chickens, Eggshell strengthener, Chicken health booster |
| Special Ingredients | Oyster Shell |
| Special ingredients | Oyster Shell |
| Specific Uses For Product | Behavior, Stomach, Teeth, Weight |
| Specific uses for product | Behavior, Stomach, Teeth, Weight |
| Target Species | Chicken |
| UPC | 737488079470 |
| Unit Count | 64 Grams |

## Product Details

- **Age range (description):** Adult
- **Brand:** Mile Four
- **Flavour:** Natural
- **Item form:** Solid
- **Specific uses for product:** Behavior, Stomach, Teeth, Weight

## Images

![Mile Four Oyster Shell for Chickens - Calcium Supplement for Chickens, 100% Natural Limestone Calcium Carbonate, Strong Eggshell & Bone Booster, 4 lbs - Image 1](https://m.media-amazon.com/images/I/81ULiKfAyEL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality calcium for your laying hens
*by G***C on 10 August 2025*

Excellent additional source of calcium for laying hens and they love it. Will have to set up routine shipments.

### ⭐⭐⭐⭐⭐ Great price and fast delivery
*by J***A on 2 March 2026*

It a great dietary supplement for your chickens

### ⭐⭐⭐⭐ Less than I estimated but still okay for price
*by E***N on 23 June 2022*

Obviously you have no control over what 4lbs is, the amount was less than I imagined. Ordering online is tricky as far as picturing what you are actually recieving. The size of pieces is perfect for our adult chickens. They seem happy with it, I've had to refill their dish just a few days after initially filling it. I'll be looking into a bigger bag for any future purchases because the 4 lb bag won't be lasting long. We have 5 chickens, I think their calcium need is higher at 6 years old. So this bag might last longer for someone with younger chickens. Otherwise I recommend comparing the 50lb bag with other options.

## Frequently Bought Together

- Mile Four Oyster Shell for Chickens - Calcium Supplement for Chickens, 100% Natural Limestone Calcium Carbonate, Strong Eggshell & Bone Booster, 4 lbs
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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-29*