---
product_id: 293647277
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: "¥12354"
currency: JPY
in_stock: true
reviews_count: 8
category: "Mile Four"
url: https://www.desertcart.jp/products/293647277-mile-four-oyster-shell-for-chickens-calcium-supplement-for-chickens
store_origin: JP
region: Japan
---

# 100% organic limestone source Thicker, stronger eggshells 4 lbs natural calcium boost 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:** ¥12354
**Availability:** ✅ In Stock

## Summary

> 🥚 Elevate your eggshell game—because your hens deserve the best calcium boost!

## 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?** ¥12354 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/293647277-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

- • **Eco-Friendly & Pure:** Sustainably sourced, all-natural limestone calcium carbonate that’s safe for your birds and the planet.
- • **Natural Calcium Crave:** 100% additive-free oyster shell that hens instinctively seek for optimal health and performance.
- • **Smart Feeding Formula:** Chickens self-regulate intake—average 1 lb per hen per month, preventing waste and ensuring balance.
- • **Eggshell Armor Upgrade:** Fortify your flock’s eggs with 94-97% pure calcium carbonate for unbeatable shell strength.
- • **Bone & Vitality Booster:** Supports stronger bones, enhanced immune function, and cardiovascular health in laying hens.

## Overview

Mile Four Oyster Shell is a premium 4-pound bag of 100% natural limestone calcium carbonate designed to strengthen eggshells and support bone health in laying hens. This additive-free, organic supplement helps reduce egg breakage and promotes overall vitality by providing hens with the essential calcium they instinctively need, making it a must-have for any serious poultry keeper.

## Description

desertcart.com : Mile Four Oyster Shell for Chickens - Calcium Supplement for Chickens, 100% Natural Limestone Calcium Carbonate, Strong Eggshell & Bone Booster, 4 lbs : Pet Supplies

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. Cleaner breaks, richer yolks, tougher shells from clean, natural calcium source that hens crave.
- 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 | #74,570 in Health & Household ( See Top 100 in Health & Household ) #426 in Calcium Mineral Supplements |
| Brand | Mile Four |
| Brand Name | Mile Four |
| Breed Recommendation | All Breed Sizes |
| Container Type | Bag |
| Customer Reviews | 4.5 out of 5 stars 211 Reviews |
| Flavor | Natural |
| Global Trade Identification Number | 00737488079470 |
| Item Form | Solid |
| Item Weight | 4 Pounds |
| 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 |
| Specific Uses For Product | Behavior, Stomach, Teeth, Weight |
| Target Species | Chicken |
| UPC | 737488079470 |
| Unit Count | 64 Ounce |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** Mile Four
- **Flavor:** 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)

## Available Options

This product comes in different **Size, Flavor** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality calcium for your laying hens
*by G***C on August 10, 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 March 2, 2026*

It a great dietary supplement for your chickens

### ⭐⭐⭐⭐ Less than I estimated but still okay for price
*by E***N on June 23, 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 Japan*
*Store origin: JP*
*Last updated: 2026-07-17*