Mile Four Oyster Shell Calcium Hen Supplement, 4-lb bag

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About This Item

Details

  • Made in the USA from local farms, with your farm in mind.
  • Your hens will receive quality supplements that will help them with stronger egg production.
  • The calcium helps strengthen the egg shells as well as the chickens’ bones.
  • Not just for chickens—mixed flocks including ducks, geese and other waterfowl will benefit from this feed too!
  • Chickens will intuitively continue eating this feed whenever they need nutritional support with egg production.

Ingredient Information

Feeding Instructions

Learn More About Mile Four From Our Team of Experts

Frequently bought together

Questions & Answers

2 Customer Questions

What is the general size of the pieces?

Answer by Chewy • May 31, 2022
This calcium supplement is a mix of fine and small 'pebble-like' textures. The fine particles provide an immediate calcium supply while the 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. Oyster shell alternative blend of fine and coarse untreated calcium carbonate (CaCO) mined from limestone.

What is the source of this calcium?

Answer by Chewy • Oct 16, 2022
Oyster shell is an alternative 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.
Reviews
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4.5
Rated 4.5 out of 5 stars
40 Ratings
Terms & Conditions

11 Customer Reviews

Rated 1 out of 5 stars
By Curtis on Dec 15, 2025

Chickens don't like

The second type I bought for my chickens they just really do not like it maybe I could get some suggestions from somebody a certain type of chickens like more I

The second type I bought for my chickens they just really do not like it maybe I could get some suggestions from somebody a certain type of chickens like more I guess I don't know what to do from here but they just after trying to feed it to him two or three times it just lays on the ground

Rated 5 out of 5 stars
By Trudy on Aug 11, 2025
Top 500 Contributor

Great product but pricey

This is a lot more expensive than some oyster shell products but my hens seem to like it and it does the job for nice strong eggs

This is a lot more expensive than some oyster shell products but my hens seem to like it and it does the job for nice strong eggs

Rated 5 out of 5 stars
By Julie on Jan 15, 2024

Oyster Shell is a hit with the girls!

One of my hens was laying eggs with thin shells that kept cracking. After researching, I discovered it was due to a calcium shortage. I purchased this product, added

One of my hens was laying eggs with thin shells that kept cracking. After researching, I discovered it was due to a calcium shortage. I purchased this product, added it to their food, and sprinkled some around. Although they didn't devour it like mealworms, it made a significant difference. No more thin-shelled eggs since then! Definitely a worthwhile purchase, and a little goes a long way.

Rated 5 out of 5 stars
By Rebecca on Nov 14, 2023

Good source of calcium

I like to feed my chickens calcium, and it is more cost effective to purchase a bigger bag. It does its job well.

I like to feed my chickens calcium, and it is more cost effective to purchase a bigger bag. It does its job well.

Rated 3 out of 5 stars
By Banderson on Jul 1, 2023

Problem with shipping

The bag was tore open spilling the contents all over in the box it not a problem with the product just shipping

The bag was tore open spilling the contents all over in the box it not a problem with the product just shipping

Rated 1 out of 5 stars
By Claudine on Mar 28, 2023

Chickens don't like it. Smells moldy.

I bought this about six months ago. My chickens much prefer oyster shell and I end up cleaning this out because they don't go through it. It smells moldy. I wouldn't

I bought this about six months ago. My chickens much prefer oyster shell and I end up cleaning this out because they don't go through it. It smells moldy. I wouldn't think calcium would smell at all. Stick with oyster shell. I regret this purchase.

Rated 5 out of 5 stars
By indigoraven on Nov 17, 2022

Works, but our chickens prefer oyster shell

We ordered this when we couldn't find oyster shells anywhere. It just seems like the hens don't go through it as fast as the oyster shell and we had one start to

We ordered this when we couldn't find oyster shells anywhere. It just seems like the hens don't go through it as fast as the oyster shell and we had one start to get soft eggs. I am sure this is because she wasn't eating this. I now provide this mixed with oyster shells, so the less picky hens can eat this and the picky one can have oyster shells.

Rated 5 out of 5 stars
By Brock on Jul 1, 2022

Your frying pan will thank you!

I started to notice that some of my flocks eggs were a little softer than when they first started laying and i read online that it might be because they have a calcium

I started to notice that some of my flocks eggs were a little softer than when they first started laying and i read online that it might be because they have a calcium deficiency. Purchased some of this and within a week their eggs were stronger and omg i really think you can taste the difference. They've also started to lay on a more regular basis, so i definitely think there was less calcium than they needed in their diet. overall very happy and i'll buy more when i run out!

Rated 3 out of 5 stars
By Princess on Sep 13, 2022

I do not recommend it

It is okay some are powdered form. My chickens are still laying some soft shelled eggs so It is not working

It is okay some are powdered form. My chickens are still laying some soft shelled eggs so It is not working

Rated 1 out of 5 stars
By HDRN25 on Jun 8, 2022

Chickens refuse to eat it.

The description says a mixture of medium and fine granules, but what I received was a chumpy powder like consistency. My chickens refuse to eat it.

The description says a mixture of medium and fine granules, but what I received was a chumpy powder like consistency. My chickens refuse to eat it.