Backyard Chicken Dosing Guide: Exact Amounts for Small Flocks

Every Southland product was formulated for poultry operations running thousands of birds. That doesn’t mean it’s wrong for your 8 hens — it means the label math doesn’t translate to a backyard waterer. This guide gives you the exact amounts for flocks of 3 to 25 birds.

Quick Reference: All Products at a Glance

Product	What it does	How often	Flock of 3-6	Flock of 7-12	Flock of 13-25
Big Ole Bird	Probiotic for gut health & immunity	Every water change	1 tsp per gallon	1 tsp per gallon	1 tsp per gallon
Hen Helper	Vitamins & minerals for laying hens	Daily in water	1 tsp per gallon	1 tsp per gallon	2 tsp per gallon
Catalyst	Stress-period vitamin boost	During stress events	½ tsp per gallon	1 tsp per gallon	2 tsp per gallon
Litter Life	Biological litter & ammonia treatment	Every 2-4 weeks	2 oz per 10 sq ft	4 oz per 20 sq ft	8 oz per 40 sq ft
Desecticide	Natural insect control (mites, beetles, flies)	As needed	Light spray on coop surfaces	Moderate spray	Thorough spray, all surfaces

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Big Ole Bird — Probiotic

What it is: USDA Organic, OMRI Listed probiotic. Beneficial bacteria that colonize the gut to support immunity, digestion, and overall bird health.

The rule: 1 teaspoon per gallon of drinking water. This rate works for any flock size — it’s concentration-based, not bird-count-based.

Waterer size	Amount	How often
1 gallon	1 tsp	Every water change
3 gallon	1 tbsp (3 tsp)	Every water change
5 gallon	5 tsp (~1.5 tbsp)	Every water change

When to use it:

• Daily, year-round for baseline gut health
• Especially important during: seasonal transitions, after adding new birds, during molting, after any stress event
• Compatible with apple cider vinegar (use them on alternate days or in the same water)

How long does a bottle last? A 16 oz bottle at 1 tsp per gallon with a 3-gallon waterer changed twice a week = roughly 4-5 months for a small flock.

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Hen Helper — Vitamin & Mineral Support

What it is: Liquid vitamin and mineral supplement formulated for laying hens. Supports egg production, shell quality, and feather health.

The rule: 1 teaspoon per gallon for flocks under 12 birds. 2 teaspoons per gallon for 13-25 birds.

Waterer size	3-12 birds	13-25 birds
1 gallon	1 tsp	2 tsp
3 gallon	1 tbsp	2 tbsp
5 gallon	5 tsp	10 tsp (~3 tbsp)

When to use it:

• Daily during active laying season
• Increase during molting (feather regrowth demands vitamins)
• If you notice thin or soft eggshells
• During extreme heat or cold (stress depletes vitamins faster)

Can I use it with Big Ole Bird? Yes. They complement each other. Big Ole Bird supports the gut; Hen Helper provides the vitamins and minerals. Use both in the same waterer.

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Catalyst — Stress-Period Vitamin Boost

What it is: Concentrated vitamin supplement for high-stress periods. Think of it as the emergency version of Hen Helper.

The rule: Use only during stress events, not daily. Higher concentration than Hen Helper.

Waterer size	3-6 birds	7-12 birds	13-25 birds
1 gallon	½ tsp	1 tsp	2 tsp
3 gallon	1.5 tsp	1 tbsp	2 tbsp
5 gallon	2.5 tsp	5 tsp	10 tsp

When to use it:

• Adding new birds to the flock (3-5 days)
• After a predator attack or scare
• During extreme weather (heat wave, cold snap)
• First week with new chicks or pullets
• During or after illness recovery

How long to use it: 3-7 days during the stress event. Then switch back to Hen Helper for daily maintenance.

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Litter Life — Coop Litter Treatment

What it is: Biological amendment that introduces beneficial microbes to break down waste, reduce ammonia, and control odor in coop litter.

The rule: Apply based on coop floor area, not bird count.

Coop size	Amount	How often
Small (4×4 to 4×8, 3-6 birds)	2 oz (~4 tbsp) mixed in 1 quart water	Every 2-4 weeks
Medium (6×8 to 8×8, 7-12 birds)	4 oz (~½ cup) mixed in 2 quarts water	Every 2-4 weeks
Large (8×12 to 10×10, 13-25 birds)	8 oz (1 cup) mixed in 1 gallon water	Every 2 weeks

How to apply:

1. Mix the concentrate with water in a garden sprayer or watering can
2. Spray or sprinkle evenly over the litter
3. Focus on areas under roosts and around waterers (highest waste concentration)
4. Best applied on a dry day — biology needs moisture but not soaking

When to use it:

• After coop cleanout with fresh bedding (establish biology early)
• Every 2-4 weeks as maintenance
• Any time you notice ammonia smell at bird level
• Before adding new bedding on top of existing litter (deep litter method)

Does it replace cleaning? No. It extends the time between full cleanouts by keeping the biology active and ammonia down. You’ll still do full cleanouts, just less often.

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Desecticide — Natural Insect Control

What it is: Natural insecticide for controlling mites, darkling beetles, flies, and other coop pests. Safe for use around birds and nesting areas.

The rule: Spray coop surfaces, not birds directly. Coverage based on coop size.

Coop size	Amount	Application
Small (3-6 birds)	Light misting of all interior surfaces	Roosts, nesting boxes, wall joints, floor edges
Medium (7-12 birds)	Moderate spray of all surfaces	Same areas, plus run perimeter if covered
Large (13-25 birds)	Thorough spray of all surfaces and joints	All above, plus treat any wooden structures in run

When to use it:

• At first sign of mites (check at night with flashlight — red mites feed after dark)
• If you see lice on birds (white egg clusters at feather bases near vent)
• Preventive application every 4-6 weeks during warm months
• After full coop cleanout (treat bare surfaces before adding bedding)

How to check for mites: Place a white paper towel under the roost at night. Check in the morning — tiny red or brown dots that smear red when squished are mites.

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Seasonal Quick Guide

Season	What to focus on	Products
Spring	New chicks, coop refresh, mite prevention	Big Ole Bird + Catalyst (chicks), Litter Life (fresh start), Desecticide (prevention)
Summer	Heat stress, fly control, water quality	Big Ole Bird (daily), Catalyst (heat events), Desecticide (flies)
Fall	Molting support, egg production decline, shorter days	Hen Helper (vitamins for feather regrowth), Big Ole Bird (daily)
Winter	Respiratory health, litter management, reduced ventilation	Big Ole Bird (daily), Litter Life (ammonia control with closed coop)

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“Do I Really Need All of These?”

No. Start with one and add as needed:

1. Start here: Big Ole Bird — daily probiotic is the foundation. It prevents more problems than it costs.
2. Add next: Hen Helper — if you’re keeping hens for eggs, this supports production and shell quality.
3. Add when needed: Litter Life — if ammonia or odor is a problem. Desecticide — if you find mites or lice.
4. Keep on hand: Catalyst — for stress events. You won’t use it daily but you’ll be glad you have it.

See also: What’s Wrong With My Chicken? — symptom-by-symptom diagnostic guide for backyard flocks.