Backyard hens foraging in clover in front of a wooden chicken coop at golden hour

Good for your flock.
Good for the planet.

Natural daily care for backyard chickens, made from clean ingredients and larvae raised on upcycled food waste.

4.8 from 4,500+ reviews

  • 4.8 out of 5 starsfrom 4,500+ reviews & ratings
  • 100,000+orders shipped
  • American-runproud U.S. business
  • Black Soldier Fly Larvaeupcycled from food waste
Our story

GrubTerra started with one goal in mind: making a positive impact on the environment while giving chickens the best feed and supplements possible.

Today it feeds backyard flocks across the country, from the treat bowl to the coop.

Read our story

From food waste to your flock

How our black soldier fly larvae treats are made.

  1. Leftover produce and spent grain saved from going to waste

    We start with pre-consumer food waste

    Leftover produce and grain from breweries, markets and farms that would otherwise go to landfills.

  2. A handful of live black soldier fly larvae held over a larvae bin

    Larvae turn it into protein

    Black soldier fly larvae eat that waste and grow rich in protein and calcium.

  3. Your hens get the good stuff

    We dry the larvae with nothing added and ship them to your flock as a healthy treat.

Our impact
14,164,670 lbs of food waste kept out of landfills since 2022

Every 1 lb of our larvae upcycles about 20 lbs of food waste.

Three hens eating from a feed pan inside a sunny coop
Peck Purity Daily Digestive Defense for Flock Strength
Our #1 seller

Daily gut defense in one easy scoop

4.6 from 200 reviews

Diatomaceous earth and yucca extract, sprinkled over the feed your hens already eat. No mixing, no water, no fuss.

  • More consistent droppings
  • Helps keep vents clean
  • Everyday vitality support
  • Made in the USA

One 1 lb pouch a month covers 4–8 hens. Add a pouch for every 5 more.

Shop Peck PurityFrom $32.99
Real reviews

Loved by flock keepers

4.8 out of 5 from 4,500+ reviews & ratings on GrubTerra.com and Amazon

Customer photo from Leah G.

“I've got 30 chickens so I make 2 treat pans for them with Peck Purity on top and they can't get enough. Their poops are firm and their vents are almost sparkly clean! I give that credit to Peck Purity, love this product! Thank you, my girls love it and I'll never stop buying it.”

Leah G.Peck Purity
Customer photo from Brie S.

“The black soldier fly larva are one of our flock’s favorite treats! As soon as they hear the bag rustle, they come running! Happy to have found a product that is healthy and a well loved protein source for our chickens, ducks, and goose!”

“Clean droppings and healthy guts give me clean eggs and happy chickens!! I love that I can just sprinkle it into their feed everyday and they absolutely LOVE it too!!”

Kailey B.Verified buyerPeck Purity
Customer photo from Tisha J.

“We used to have dirty, gross eggs. Now, look at them after just 2 weeks using hen harmony!”

Tisha J.Verified buyerHen Harmony
Customer photo from Kyna F.

“Better fluffy butts! They love it on their food!”

Kyna F.Verified buyerPeck Purity
Customer photo from Jill H.

“I used to get a cheaper brand from China, but wanted something better for my hens. … My hens make the final decision with a taste test. … All 32 hens picked Grubterra over their old cheaper brand. They're happy with their morning treats, so I'm happy.”

Jill H.Verified buyerDried Black Soldier Fly Larvae
Customer photo from Marie W.

“We feed Peck Purity to all of our poultry. From or chicks to our layers even our quail get it in their feed. Our egg production has improved because our flocks are healthier!”

Marie W.Verified buyerPeck Purity
Customer photo from Mary C.

“My hens are absolutely bonkers for these black soldier flies! … They are plump, healthy, contented birds. … These are an irreplaceable part of my hens' daily routine and health, and it's good for the environment because these flies consume waste during production.”

Mary C.Verified buyerDried Black Soldier Fly Larvae

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FAQ

Questions from flock keepers

Do backyard chickens need supplements?

A complete layer feed covers your flock's basic nutrition. Natural chicken supplements add support on top of it: Peck Purity is a daily gut routine sprinkled over the feed, and Hen Harmony adds vitamins, minerals, electrolytes, prebiotics and probiotics to the water, which helps your hens through heat, cold snaps, molting and other stressful stretches.

Are black soldier fly larvae good for chickens?

Yes. Dried black soldier fly larvae are a protein-rich treat that's naturally high in calcium, which hens use to build strong eggshells. They have about 75 times more calcium than mealworms. Feed them as a treat alongside a complete layer feed.

How many dried larvae should I give my hens?

Keep all treats, larvae included, to about 10% of what your flock eats each day, so their complete layer feed stays the main meal.

What is Peck Purity and how do I use it?

Peck Purity is a daily gut-support supplement made with diatomaceous earth and yucca extract. Sprinkle it over your flock's regular feed once a day. No mixing, no water. One 1 lb pouch a month covers 4–8 hens; add a pouch for every 5 more hens. Shop Peck Purity

What's the difference between Peck Purity and Hen Harmony?

Peck Purity goes in the feed and focuses on daily digestion. Hen Harmony goes in the water and adds vitamins, minerals, electrolytes, prebiotics and probiotics, which helps your hens through heat, cold snaps and other stressful stretches.

Where do your larvae come from?

Our larvae come from partner farms in Canada, the USA, Mexico, Costa Rica, Indonesia and Malaysia, and we've visited and vetted every one of these farms ourselves. The larvae are raised on food waste, then harvested and dried with nothing added. They're never grown in China, and they're lab-tested for heavy metals.

Do you sell live larvae for reptiles?

Yes. Our fresh black soldier fly larvae ship live in counts of 500 to 3,000, packed in small tubs of 500+ larvae, for bearded dragons, turtles and other reptiles. Shop live larvae

Give your flock the good stuff

Gut support, larvae treats and coop care, with 100,000+ orders shipped to backyard flocks.