GrubTerra®

“Dried chicken poop stuck in my hens' vent feathers and I'm out there with scissors again.”

— Tristan L., Peck Purity customer who saw results within 14 days

Illustration of a hen showing how the mess travels from her gut to her vent
Protect Your Girls' Gut Today →
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“My chickens look healthy from the front. Then they turn around and I see the mess and my stomach drops.”

— Courtney B., Peck Purity customer who saw results within 26 days

A hen that looks healthy from the front next to the same hen from behind with poop caked in her vent feathers

Bright eyes, shiny feathers, eating like normal. Then she turns around and her vent feathers are caked with dried poop. You clean her up, and a few days later it's right back.

If this sounds like your flock, you are not alone. Messy vents are one of the most common things our customers tell us about. It's gross to deal with and worrying to see. We hear you, and there is a simple daily step that can help from the inside.

“I'm sick of soaking my hen's butt in the kitchen sink every weekend.”

— Casey L., Peck Purity customer who saw results within 9 days

A hen getting a soapy bath in a kitchen sink

Soaking her in the sink. Trimming her feathers. Holding a squirming hen while you wipe her down. It's exhausting, and it never seems to end. You're not doing anything wrong. Baths and trims clean the outside, but the mess keeps coming back because it starts inside her.

Firm droppings drop clean. Loose, sticky droppings cling to her feathers on the way out. Very often, those loose droppings come from a common gut bug called coccidia, or hidden parasites living in her gut. Left alone, they can keep irritating her gut and cause bigger problems.

Researchers tested 64 backyard flocks with no signs of disease. 64% had coccidia.

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

If your flock has this problem, it is not your fault. The flocks in this study belonged to regular backyard keepers, just like you. None of the flocks showed signs of disease, but almost 2 out of 3 had coccidia in their gut. Many had worms too: about 1 in 4 flocks had Capillaria, and 1 in 5 had roundworms.

Chickens pick these bugs up just by scratching and pecking the ground. The bugs settle in her gut lining, the part that soaks water back into her body. When it gets irritated, her droppings turn loose and sticky, and that is what ends up caked on her feathers.

We understand how stressful this is, and we see it all the time. You shouldn't have to reach for the scissors every week. The good news: it's very common, and you can do something about it. 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.

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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
Leah G.✓ Verified
★★★★★

“Their poops are firm and their vents are almost sparkly clean! I give that credit to Peck Purity, love this product!”

— Saw results within 18 days

Martina A.✓ Verified
★★★★★

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

— Saw results within 25 days

Emily W.✓ Verified
★★★★★

“I had some chickens with runny poo, dirty rear ends, and since I have been adding this to their diets, I have seen great improvement in all the above!”

— Saw results within 19 days

Alison P.✓ Verified
★★★★★

“I've definitely noticed their butts being cleaner and more solid poops.”

— Saw improvement within 28 days

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

Many keepers start to see droppings firm up, so less of it sticks to her feathers.

Weeks 3–4
A Big Difference

Many keepers see far fewer messy vents as her gut gets back on track. Fewer baths, less trimming.

Weeks 5–6
Feeling Good Again

For many flocks, messy vents are mostly gone by now, and the scissors can stay in the drawer.

Weeks 7–8
Happy Flock, Happy Family

Clean fluffy butts, firm droppings, 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

Cleaner vents, no catching required.

90-day money-back guarantee. Free shipping on orders over $100.

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.