Mile Four Chicken Grit for Layer & Grower Chickens - Natural Quartzite

In this review of Mile Four Chicken Grit for Layer & Grower Chickens, the bottom line is simple: this is a straightforward, natural quartzite grit that helps birds digest feed and supports steady egg production. Intended for birds aged 8 weeks and up, the product's biggest strength is its role as a required digestive aid for chickens that do not have teeth. Reviewers found the grit consistent in size and quality, noting that birds eat it as needed and that it helps with digestion and overall feed breakdown.

Key Features

• Natural quartzite grit: Provides an all-natural mineral source that helps chickens grind feed in their gizzard so nutrients are more accessible.
• Size for layers and growers: Formulated for birds aged 8+ weeks so juvenile and laying chickens can handle the particle size safely.
• USA mined material: Quartzite sourced domestically for a consistent, inert mineral product without additives.
• Feed support: Helps hens produce larger, more consistent eggs by improving digestion and nutrient absorption.
• Self-regulating consumption: Birds eat grit as needed, which makes it easy to offer in a separate container without concern for overconsumption.
• Simple quantity guideline: Estimate about 1 lb. per month per laying chicken to keep supply steady through seasonal or breed variations.

Who It's For

This grit is best for backyard poultry keepers and small commercial producers who raise layers and grower chickens aged 8 weeks and older and who want a plain, natural mineral grit to aid digestion. It suits those who prefer a single-ingredient, USA-mined product to complement feed and encourage consistent egg size.

Those with chicks under 8 weeks should choose the starter grit size instead, and keepers seeking blended supplements or combined calcium/oyster shell mixes may prefer a separate oyster shell product for additional calcium needs rather than this pure quartzite grit.

Pros & Cons

Pros

• Consistent particle size that baby growers and layers will consume as needed and that customers praised for quality.
• All-natural quartzite with no additives, making it a clean digestive aid for feed processing.
• Easy to offer separately so birds self-regulate intake, reducing waste and overfeeding concerns.

Cons

• Not a calcium supplement, so layers needing extra calcium for eggshell strength will need an additional oyster shell or similar product.

Specifications

Product type	Chicken grit (Layer & Grower)
Suitable age	8+ weeks
Material	100% natural quartzite
Source	USA mined
Package size	50 lbs
Consumption guideline	Approx. 1 lb. per month per laying chicken

Our Verdict

Mile Four Chicken Grit is a dependable, no-frills quartzite grit that does the one job it needs to: aid gizzard function so birds digest feed and produce consistent eggs. It represents good value for backyard and small-scale keepers who want a pure mineral grit; just remember to pair it with a calcium source for layers needing extra shell support.

Frequently Asked Questions

Do chickens need grit?
Yes. Chickens do not have teeth and need grit to grind feed in the gizzard so nutrients can be absorbed properly.

Which age is this grit for?
This product is formulated for layers and grower chickens aged 8 weeks and older; starter grit is recommended for 0-8 week chicks.

Is this grit a calcium supplement?
No. This is quartzite grit for digestion; layers needing extra calcium should be given oyster shell or a dedicated calcium supplement.