GrubTerra®

That Messy Vent Isn’t A Cleaning Problem. It’s A Warning Sign.

What most keepers scrub off is the last step in something that started weeks earlier.

A backyard hen from the front looking healthy, and from behind with a soiled vent
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By The Time You’re Scrubbing Her Vent, It Has Been Going On For Weeks.

Side-by-side photo of normal and cecal chicken droppings

A messy vent is the end of a chain, not the start of one. Something upstream loosened her droppings. Loose droppings stick to the feathers around the vent. Stuck droppings cake, and then they catch the next lot. What you finally notice is step four.

Scrubbing treats the mess, not the reason it is there. That is why it is back three days later, and why the same one or two hens keep being the problem.

Researchers Tested 64 Backyard Flocks With No Signs Of Disease. 64% Had Coccidia.

A 2021 survey of backyard flocks in the United States.

Overhead view of a backyard flock with about two thirds of the hens circled

Not one of those birds looked sick. Coccidia is a tiny gut bug. Many of the same flocks also showed signs of worms: about 1 in 4 had Capillaria, and 1 in 5 had roundworms.

A healthy-looking hen is not proof of a healthy gut. These bugs live in her gut — which is the same place her droppings are formed. That is why the first thing you see is usually a mess at the back end.

You Have Probably Already Tried Most Of These.

And they are all reasonable things to try.

A healthy-looking hen with worms illustrated inside her gut

A warm bath and a careful trim. Fresh bedding. A different feed brand. Pumpkin seeds scattered in the run. Garlic in the water. Most keepers work through that list in roughly that order.

Here is the trouble with each one. A bath cleans the outside. New bedding changes what she sits on. New feed changes what goes in. None of them change what is already living in her gut. And garlic has actually been tested in chickens — at the recommended dose and at ten times that dose — and both groups finished with the same roundworm load as the birds that got nothing.

Every flock that touches dirt gets exposed. You cannot stop that. What you can do is give her daily gut defense, with natural ingredients that lowered worm and coccidia counts in poultry studies.

You Can't Stop Her From Picking Them Up. You Can Defend Her Gut.

Peck Purity Daily Gut Defense bag next to a healthy hen, with a Formulated by a Doctor in Poultry Nutrition badge

She could be picking up new gut bugs every day. Each time she pecks the ground, she might swallow something that can cause harm inside. That is why you need to stay one step ahead and protect her gut every day.

Peck Purity is a daily gut defense. Every scoop has two natural ingredients that scientists have tested on chickens.

The first is yucca, a desert plant. In one study, chickens with coccidia that ate yucca ended up with almost 6 times less infection than chickens that didn't.

The second core ingredient in Peck Purity is food-grade diatomaceous earth, a fine natural powder. In a separate study, hens that ate it every day had fewer parasites by the end of the study than hens that didn't.

Peck Purity is simple. It's a food-grade powder you sprinkle onto the feed. No syringes, no catching birds, and no egg withdrawal.

This is the daily part, not the emergency part. Peck Purity will not clear an active infestation. If you think she is carrying a real burden, that is a vet and a proper wormer — ask about a fecal test. What this does is give her gut something every single day, so you are not always reacting.

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★★★★★1,490 Total ReviewsReal Flocks. Real Results.

Smiling keeper holding a basket of eggs next to her hens and a bag of Peck Purity
Martina A.✓ Verified
★★★★★

“Noticed significant improvement of dirty vents before 30 days!”

Patricia P.✓ Verified
★★★★★

“More firm poop and fluffy butts. What could be better?!”

Scot N.✓ Verified
★★★★★

“Noticing fewer nasty butts, definitely improving.”

1,871+ flock owners are on the monthly scoop subscription, with 1,490 reviews — and every bag is backed by our 90-Day Money-Back Guarantee.

What To Expect, Week By Week.

Coop wall calendar with weeks crossed off above a bag of Peck Purity and a feed scoop
Week 1
Getting Started

Add one scoop to the feed. Her gut starts getting daily defense, and you might see your girls start to perk up.

Week 2
First Changes

Old problems slowly start to clear up. Watery droppings, dirty eggs and poopy butts are usually the first things to turn around.

Weeks 3–4
A Big Difference

Many keepers see a big drop in watery droppings, dirty eggs and poopy butts as her gut gets back on track.

Weeks 5–6
Feeling Good Again

For many flocks, those problems are mostly gone by now, and your hens are acting like themselves again.

Weeks 7–8
Happy Flock, Happy Family

Clean eggs, clean butts, and a flock that feels good. One scoop a day keeps it that way.

Every flock is different. That's why you get 90 days to see it for yourself.

Try It For 90 Days. Love It Or It's Free.

Peck Purity bag with 90-day money-back guarantee and eggs

You don't have to decide today if it works. Your flock gets 90 days to show you.

Feed Peck Purity for three full months. If you don't see a difference, you get a full refund.

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Peck Purity bag with chickens feeding

Clean feathers, no catching required.

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Peck Purity™ — 1 lb bag · about one month for 4–8 birds
Ingredients: plant protein products, diatomaceous earth, Yucca Schidigera extract, mineral oil, natural flavors
No injections. No harsh chemicals. Nothing to catch a bird for.
One scoop daily. Mixes into feed.
From GrubTerra (1,490 reviews · 4.7 stars · 1,871+ flocks served)
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90-Day Money-Back Guarantee — feed it for three full months. If it isn't the change you hoped for, we refund you. No catch.

Common Questions

Let's clear this up before you order.

No. Peck Purity is a non-medicated daily feed supplement, not a medicine. If a bird is visibly sick — bloody droppings, hunched, not eating — call a vet right away. What Peck Purity does is daily gut support, built on ingredients studied in chickens under coccidia pressure.

No. It is a daily feed supplement, not a medicine. If you think a bird has a heavy worm load, ask a vet about a fecal test. Peck Purity supports the gut every day with ingredients studied in chickens.

Keep it to a 2% inclusion rate at most. In simple terms: mix one 1 lb bag into a 50 lb bag of feed, or half a bag into a 25 lb bag.

No. Peck Purity is a non-medicated feed supplement, not a medication — you keep collecting and eating eggs the whole time.

Two things. Raw DE puffs into a dust cloud the moment you scoop it, which is unpleasant for your lungs and worse for a chicken's respiratory system — ours is lightly coated in food-grade mineral oil so it stays put. And raw DE is one ingredient. Peck Purity pairs it with Yucca Schidigera extract, plus natural flavors so the birds will actually eat it consistently.

Because the research is not there. Capsaicin has no peer-reviewed studies in chickens for parasite control, and garlic was tested directly — a 2011 Poultry Science trial gave 450 infected chickens allicin at the recommended dose and at ten times the recommended dose, and both groups ended up with the same worm load as the untreated controls. We built the formula around ingredients with published poultry research behind them instead.

Yes — that's what the natural flavors are for. A supplement only works if it goes down consistently, and picky flocks are the main reason daily routines fall apart.

Give it about two weeks of daily feeding before you judge it. It's gradual, not dramatic — and it works the way a daily habit works, which means it only keeps working if you keep doing it.

Peck Purity is a non-medicated poultry feed supplement. It is not intended to diagnose, treat, cure, or prevent any disease.