Chicken Grit + Oyster Shell | Layer & Grower Supplements
$35.99
Oyster Shell
- Regular price
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$69.99 - Regular price
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$79.99 - Sale price
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$69.99
Why Buy
Give laying hens the natural calcium boost they need with Mile Four Oyster Shell. Made from all-natural USA-mined, crushed oyster shell limestone, 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.
Instructions for Use
Offer oyster shell free-choice in a separate dish next to the feeder, never mixed into feed, so each hen can self-regulate intake. Thin, soft, or easily cracked eggshells are usually the first sign a flock needs more calcium; refill the dish sooner if that starts showing up.
Keep the dish topped off rather than rationing it, and store the bag in a cool, dry place.
Check out our Chicken Feed Guides:
What is Oyster Shell?
How to Transition by Chicken Age
How to Transition from Old to New Feed
How to Ferment Chicken Feed
Oyster Shell Calculator
How much Oyster Shell do you need?
For 10 birds over 1 month, here's about how many bags you'd need — pick whichever size works for you:
Choose a bag size
Estimates may vary based on conditions & breed.
Larger & Tastier Eggs, Happier & Healthier Chickens
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Deeper Golden Yolks
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Stronger Eggshells
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Consistent Eggs
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Organic Eggs
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Higher Activity
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Stronger Bones
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Brighter Combs
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Shinier Plumage
What's in Oyster Shell?
Natural Untreated & Non-Medicated
Natural Crushed Oyster Shell Limestone
100% US Mined Limestone
How Much Feed Do I Need?
For 10 birds over 1 month, here's about how many bags you'd need
— pick whichever size works for you:
Choose a bag size
Estimates may vary based on conditions & breed.
Customers praised this calcium supplement for strengthening eggshells, with many noting "thicker and more robust" shells. The product works well for chickens and quail, with one reviewer sharing "eggs are naturally thicker." Shoppers appreciated the clean packaging, reasonable price, and fast delivery. Only one negative rating mentioned flock rejection.
Price (positive)Delivery (positive)Quail (positive)Chickens (positive)Eggshells (positive)
K
My hens' eggshells are noticeably firmer and healthier since I started using this oyster shell. Pretty satisfied!
A
've been using this oyster shell for my laying hens, and it works wonders. Their eggshells are much thicker and more robust. It's easy to use and essential for egg production.
D
This oyster shell has been a game-changer for my flock. My hens lay eggs with stronger shells, and it's a simple yet effective supplement. Highly effective and reliable.
H
My hens love this oyster shell. It's improved their eggshell strength and overall health. A must-have for any poultry keeper looking to enhance egg quality. Very satisfied!
S
Surprised with the quality and chickens love it!
L
Quality and delivery was good!
S
Chickens seem to love it so we ordered more and will add to their diet.
J
the transformation in eggshell quality is remarkable. My chickens are thriving, and the evidence is in their eggs.
M
my feathered companions have taken to this feed with gusto, indicating their strong preference for its taste and texture.
P
the timely delivery, meticulous packaging, and cleanliness of this feed have left a positive impression on me and my flock.
R
my chickens are wholeheartedly embracing this fresh feed option, resulting in improved egg quality and better health.
J
eggshells are significantly stronger thanks to this feed. It has truly revolutionized my flock's egg quality.
L
the positive response from my feathered companions is truly remarkable. This feed has made a world of difference.
R
my flock's eggs are now stronger and more flavorful than ever before, thanks to this feed.
C
my chickens are thriving on the improved taste and texture of this feed. It's an all-around success.
S
the impact of this feed on eggshell quality and my hens' well-being is outstanding. I'm a very content custom
W
my hens are adapting to this feed wonderfully. Their egg quality and overall health are showing positive signs.
R
this feed has transformed my chickens' eggs into robust wonders. I couldn't be more satisfied with the results.
C
among various choices, this feed's price and quality stood out. Plus, my chickens absolutely love it!
A
my quail's health has taken a positive turn since introducing this feed. It's exactly what they needed.
A
my hens' eggs have achieved unparalleled quality, all thanks to this feed. It's a must-have for poultry enthusiasts.
K
eggshell quality has drastically improved, all thanks to this feed. It's been a game-changer for my flock.
J
this feed has revitalized my chicken business. Stronger eggs and healthier hens – it's a win-win situation!
M
this product has exceeded my expectations. My chickens' eggs and overall health are now at their best.
E
the taste and consistency of my hens' eggs have improved dramatically, thanks to this feed.
J
eggshells are now impressively strong, all thanks to this feed. It's a product that truly delivers on its promises.
R
the eggshell-boosting capabilities of this feed are unmatched. My hens are now producing healthier and stronger eggs.
K
this feed has effectively addressed the issue of weak eggshells, and my hens are now thriving and flourishing.
V
my chickens are adapting beautifully to the taste and texture improvement in this feed, which is certainly a success.
T
in just one week of using this feed, my flock's eggs have become stronger, more flavorful, and more impressive.
T
the struggles of weak eggshells are over, thanks to this feed. My hens are now healthier, happier, and more energetic.
f
Do chickens consume more oyster shell during certain times of the year?
Hi Fiona! Hens may consume more oyster shell during their peak laying periods, which can vary depending on their breed and environment. Hope this helps!