Backyard Chicken Dosing Guide: Exact Amounts for Small Flocks

Some Southland products were built for poultry houses running thousands of birds, and their labels are written in ounces per 100 gallons of water-line volume. Others — Hen Helper, the liquid Catalyst — were formulated for backyard flocks from the start. This guide translates every one of them into the amounts that make sense for a 3 to 25 bird flock and a waterer you fill by hand.

Always check the label on your bottle. Formulations and package sizes change, and the label ships with the product you actually own.

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
Hen Helper	Probiotic — gut health, laying support	Every water change	1 tbsp per gallon	1 tbsp per gallon	1 tbsp per gallon
Big Ole Bird	The commercial-scale version of Hen Helper	Every water change	see note below	see note below	see note below
Liquid Catalyst	Stress-period vitamin & electrolyte boost	During stress events	1 tbsp per gallon	1 tbsp per gallon	1 tbsp per gallon
Litter Life	Biological litter & ammonia treatment	Every 2-4 weeks	see coop-size table	see coop-size table	see coop-size table
Desecticide	Natural insect control (mites, beetles, flies)	As needed	Light spray on coop surfaces	Moderate spray	Thorough spray, all surfaces

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Hen Helper — Probiotic (start here)

What it is: Multi-strain probiotic for backyard flocks. Beneficial bacteria that crowd out harmful organisms and improve nutrient absorption, which shows up as better gut health, stronger shells, and better feather condition.

The rule: 1 tablespoon per gallon of drinking water. This rate is the same for every flock size — it’s a concentration in the water, not a per-bird amount. Six hens and twenty-five hens drinking from the same 3-gallon waterer get the same mix.

Waterer size	Amount	How often
1 gallon	1 tbsp	Every water change
3 gallon	3 tbsp	Every water change
5 gallon	5 tbsp (~⅓ cup)	Every water change

Replace treated water every 2-3 days, or whenever you refill.

When to use it:

• Daily, year-round for baseline gut health
• Start chicks on it from day one
• Especially during: seasonal transitions, after adding new birds, molting, or any stress event
• Stress events: double the dose for 3-5 days, then return to standard
• Keep about 3 days between Hen Helper and apple cider vinegar. The Mother Load label recommends spacing them rather than running both in the same water

How long does a bottle last? A quart at 1 tablespoon per gallon, with a 3-gallon waterer changed twice a week, runs roughly 2-3 months for a small flock.

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Big Ole Bird — the commercial version of the same thing

What it is: The same probiotic science as Hen Helper, concentrated for commercial water-line systems that treat thousands of birds.

Do you need it? Almost certainly not. If you have a backyard flock, Hen Helper is Big Ole Bird — same product family, sized and dosed for your waterer. Reach for Big Ole Bird only if you’re running a house-scale operation.

The rule: Big Ole Bird is labeled in ounces per 100 gallons — 1 oz per 100 gallons for the heavy initial dose, 0.5 oz per 100 gallons for maintenance. There is no backyard teaspoon equivalent on the label, and 100 gallons is more water than a small flock drinks in a month. If you already own a jug, dose it against your total water volume rather than trying to convert it into a per-gallon spoon measure, and use Hen Helper for everyday flock care.

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Apple Cider Vinegar (Mother Load) — how it fits

What it is: Raw apple cider vinegar for poultry water. It is not a probiotic — it is an acidifier, and it works differently than Hen Helper does.

The rule: 1 oz per gallon for general use. 2 oz per gallon during molt, heat, or transport stress for 3-5 days.

Running it alongside Hen Helper: the Mother Load label recommends leaving about three days between the two products rather than mixing them in the same waterer. Use a plastic waterer either way — ACV corrodes galvanized metal.

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Liquid Catalyst — Stress-Period Vitamin Boost

What it is: Concentrated vitamin and electrolyte supplement for high-stress periods. The 8 oz liquid formula is the backyard version — easier to pour into a coop waterer than the 800g powder, which is built for commercial operations.

The rule: 1 tablespoon per gallon of drinking water, during stress events only — not as a daily supplement.

Waterer size	Amount
1 gallon	1 tbsp
3 gallon	3 tbsp
5 gallon	5 tbsp (~⅓ cup)

Like the probiotic, this is a concentration in water — it does not scale up with the number of birds.

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 back to Hen Helper for daily maintenance.

A note on the powder: if you bought the 800g bag, that is the commercial product and it is dosed differently. Follow the label on the bag, not this table.

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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. The label mixes 1 gallon of concentrate with 9 gallons of water to cover 2,000 sq ft — that works out to about 0.06 oz of concentrate per square foot, which is a much smaller amount than most people assume.

Coop size	Concentrate	Mixed into	How often
Small (4×4 to 4×8, ~32 sq ft)	2 tsp (~0.3 oz)	1 quart water	Every 2-4 weeks
Medium (6×8 to 8×8, ~64 sq ft)	4 tsp (~0.7 oz)	2 quarts water	Every 2-4 weeks
Large (8×12 to 10×10, ~100 sq ft)	2 tbsp (~1 oz)	1 gallon water	Every 2 weeks

Heavy ammonia? Double the concentrate, not the water.

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: Surfactant-based insect control for mites, darkling beetles, and flies. It works by disrupting the waxy cuticle of insects on contact.

Read this first: Desecticide is labeled for poultry houses — the dilution rates on the bottle are written for commercial buildings (1 gallon of concentrate per 20-30 gallons of water). The label does not cover applying it directly to birds, and this guide does not recommend doing so. Treat surfaces, not animals.

The rule: Mix per the label, spray coop surfaces, and let everything dry before the birds return.

Where to spray	What to cover
Roosts	Undersides and the joints where roosts meet supports
Nesting boxes	Corners and seams — empty and remove bedding first
Walls & floor	Wall-to-floor joints, cracks, and any wooden structure in the run

Mites hide in cracks during the day and feed on birds at night, so the joints and seams matter more than open surfaces. If you have an active mite problem on your birds, talk to a vet about a bird-safe treatment — a surface spray addresses the coop, not the infestation already on the flock.

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 (daily, double dose through heavy molt)
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.

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Frequently Asked Questions

Can I overdose my chickens on probiotics or vitamins?

Probiotics like Hen Helper and Big Ole Bird are essentially impossible to overdose — extra organisms simply pass through. Vitamin and electrolyte products like liquid Catalyst can be overdone if run continuously at stress-event rates, which is why Catalyst is a short-course product rather than a daily one. Stick to label rates, and reserve the doubled rates for heat waves, illness recovery, or transport. When in doubt, less is fine — these are supplements, not medications.

Can I mix multiple Southland products in the same waterer?

Hen Helper and liquid Catalyst can go in the same waterer without conflict — one is a probiotic, the other a vitamin and electrolyte supplement. The one to space out is Mother Load ACV: its label recommends leaving about three days between it and the probiotics rather than combining them. Litter Life goes on bedding, never in drinking water. Desecticide is a coop surface spray and never goes in water. Refresh the waterer every 24-48 hours so the mix stays fresh.

Are these products safe for laying hens? Will they affect the eggs?

Yes — all of these are designed for layers and have zero withdrawal time. You can collect and eat eggs the same day. There’s no medication residue concern because there are no medications in these products — they’re probiotics, vitamins, biological inoculants, and natural mite control.

Do I have to use Southland products specifically?

No. Four jobs matter for backyard flock health: a daily probiotic, occasional vitamins and electrolytes during stress, a litter amendment to control ammonia, and a natural mite treatment when needed. Plenty of products in those four categories work — synthetic vitamin powders act faster, generic DE is cheaper than concentrated mite treatments, and pelletized litter amendments are easier to spread than liquids. Southland’s products are OMRI-listed and concentrated to cost less per use, but the routine matters more than the label.

How long does a bottle last for a small flock?

For 6-10 birds: a quart of Hen Helper at 1 tablespoon per gallon lasts roughly 2-3 months with a 3-gallon waterer changed twice a week. An 8 oz bottle of liquid Catalyst lasts much longer, since you only reach for it during stress events. Litter Life is sold by the gallon as a concentrate, and at backyard coop sizes a single gallon lasts a very long time — you’re using tablespoons per application, not cups.

What if my flock has a specific problem not on this list?

Start with the Symptom Guide. If the issue is respiratory, parasitic, or behavioral, no supplement will fix it — you need to address the root cause first. Email info@southlandorganics.com with photos and we’ll help you triage.