Questions, answered plainly.

1 teaspoon per 20 lb of body weight, once a day, for every powder. Sustain™ is ½ teaspoon per 20 lb. Mix it into food with a splash of water, never dry.

Stirred in with a splash of water, it mixes right into the food. Start with a quarter dose and build up over one to two weeks. If your dog won't eat it, the 30-Day Taste Guarantee covers one pack. Dr. Billinghurst's short video on finicky dogs is at gussysgut.com/finicky.

Begin with about a quarter of the daily amount and build up to the full teaspoon per 20 lb over one to two weeks. It gives your dog time to get used to a new food.

Boost™. It's the G in GROW: the ground you plant everything else in. After your first 90 days, Sustain™ roots the garden alongside it. Youthful Grasses & Sprouts™ adds variety, and Fiber & Fortifier™ tends the soil.

We ask for 90 consistent days before you judge it. The 30-Day Taste Guarantee covers whether your dog will eat it; the gut garden takes longer. If you're not willing to give it 90 days, this may not be right for you.

7.5 oz is 97 teaspoons; 3 oz is 39. At 1 teaspoon per 20 lb a day, a 7.5 oz bag lasts 97 days for a dog up to 20 lb, 48 days for 21–40 lb, 32 days for 41–60 lb, 24 days for 61–80 lb. The 90-Day Reset sizes the bags for you.

Yes, anytime, from your account. Change the delivery date, swap products, change how often it comes, or cancel.

Every subscription order ships free. One-time orders ship free at $99 and up; otherwise standard USPS shipping is $5.85.

If your dog doesn’t love the taste, return the pack within 30 days of your first order with at least half of it unused and we’ll refund you 100%, shipping included — or store credit if you’d rather. One pack per first order; if you bought several, any extra packs can be donated to your local shelter.

100-Day Return Policy on the 90-Day Reset subscription. Use it for the full 90 days. If it doesn’t work for your dog, we’ll refund you 100% to your original payment method, shipping included, any time within 100 days. Applies to the 90-Day Reset subscription only (it’s labelled in your cart and on your receipt).

Read the full refund policy →

A new pack with a farm illustration and the “18 Fermented Superfoods” band. Collard greens replace mustard greens, and every one of the 18 is a fermented plant. Pre-orders placed before the switch ship the previous formula; the website sells the new one.

Older bags show the production date. New bags show a “Best By” date about two years out, because the shelf life is two years. Both are fine; they just read differently.

Amazon continues to sell the previous formula until it sells through. The website sells the new 18-superfood Boost™.

Only Youthful Grasses & Sprouts™ is made for cats as well as dogs. Boost™, Sustain™, Fiber & Fortifier™ and GutAbles® are for dogs.

Boost™ is the first 90 days: 18 Fermented Superfoods for broad support while the gut garden gets established. Sustain™ is the everyday blend that follows: nine fermented ingredients, each present in a higher concentration, at about 40% less per bag. Four of them (broccoli, parsley, dandelion and cilantro) carry over from Boost™ on purpose.

Seven young greens, fermented: the add-on for more plant variety in the bowl. Use it alongside Boost™ or Sustain™, and it's the one blend made for cats as well as dogs.

Thirteen organic whole foods, including pumpkin, apple fiber and chicory root, for the fiber that raw and homemade bowls often run short on. The dose is a range (1 teaspoon to 1 tablespoon per 20 lb) because you adjust it to your dog. It's a dog food supplement for intermittent or supplemental feeding only.

Yes. Boost™ or Sustain™ is the base. Youthful Grasses & Sprouts™ and Fiber & Fortifier™ go in the same bowl, each at its own dose. When you add a second powder, start it low too.

No. GutAbles® are treats for between meals: an animal protein, a blend of our fermented superfoods, and organic Manuka honey, dehydrated (never cooked, baked or extruded). They support what the powders do through the day; they don't replace them. They're on Susan Thixton's Treat List.

No, and we don't add any. Our fermentation creates probiotics and postbiotics from the plants themselves, and the plants bring prebiotic fiber. That's a different thing from a capsule of lab-grown strains, which is why we don't call ourselves a probiotic.

Because that's what's in the bag. Each 7.5 oz pack of Boost™ or Sustain™ starts as about 7½ lb of fresh organic food before fermentation and a gentle dry. One ounce of powder is roughly one pound of produce.

Yes. Boost™ is gluten-free.

Yes to both. Boost™ and Sustain™ are certified organic, and our products are third-party tested.

For most dogs, yes. Our fermentation creates probiotics and postbiotics from whole plants, and the plants bring the prebiotic fiber that feeds them. If your vet has prescribed a specific strain, keep giving it; the two work alongside each other.

Yes, it goes over any diet. There's no need to remove the vegetables you already feed or change your routine.

Normal batch variation. Fermentation time and the season's crops change the color, smell and texture a little from batch to batch. Nothing is added to make every bag identical.

Our largest bag is 7.5 oz for Boost™ and Sustain™. For more than one dog, or a big dog, work out the daily amount from each dog's weight (one teaspoon per 20 lb) and the 90-Day Reset will size the number of bags for you.

Sealed, airtight, at room temperature in the pantry. No refrigeration needed. Unopened, a bag keeps for two years; once opened, use it within a year.

We make small batches and the bags are designed to keep air and moisture out, so there's nothing to preserve against. Bags made by the million and stored for a year need preservatives. Ours don't.

Two things. Never feed the dry powder on its own, where a dog could inhale it: always mix it into food or a splash of liquid. And never cook it; heat breaks down what fermentation built. Stir it in after cooking, not before.

For puppies under six months we recommend Youthful Grasses & Sprouts™; Boost™ from six months on, at the same teaspoon-per-20-lb ratio. For an older dog, or one with a sensitive stomach, start at an eighth to a quarter of a dose and build up over two to three weeks instead of one to two.

Give it a minimum of 90 consistent days. Some dogs respond faster; others need up to six months. Stools usually tell you first.

If the itching is gut-related, supporting the gut can make a difference, and many owners tell us it did. Skin trouble has many causes, so keep your vet in the loop, and give it 90 consistent days before you judge it.

Often, when the habit is gut-related. Boost™ and Youthful Grasses & Sprouts™ are the two we point to for grazers. Give it 90 days.

It can, but it depends on the dog and on the severity and underlying cause of the yeast. Not all yeast issues are the same, so talk to your vet for guidance specific to your dog.

In general, yes. It works alongside most supplements and you don't need to drop anything. If your dog takes prescribed medication, check with your vet.

We can't give medical advice for specific conditions, and every dog is different. Ask your vet before starting, especially if your dog is on medication or a special diet, and bring the ingredient list; it's on every product page. They can tell you whether and how to include it.

Some dogs have a short adjustment period as the gut changes, which is why we start at a quarter dose. Go back a step and build up more slowly. If symptoms are severe or last more than five to seven days, or you ever see blood in the stool, stop and check with your vet.

Cells turn over on a schedule, the microbe community shifts over weeks, and nutrients need time to be absorbed before anything shows on the outside. Speed depends on the dog: age, diet, history. We ask for 90 consistent days, without a break, before you judge it. Stools usually tell you first.

In the USA, in small batches, from organic and regeneratively sourced ingredients from farms we know.

Anytime, from your account under Subscriptions, or message us with the email on the account and we'll cancel it for you.

Change the delivery date, frequency or quantity from your account under Subscriptions. If you'd rather we did it, tell us what to change.

Yes. Swap products from your account. To add a product to your subscription for the first time, order it through the website so the first-subscription saving applies.

Cancel the subscription and any order already placed still ships as a one-time purchase, with nothing recurring after it.

Cancel it from your account. Make changes at least three to five days before the next order processes so they take effect in time; an order that has already processed is a valid subscription order under the terms.

If it hasn't shipped yet, usually. Send your order number as soon as you can and we'll try to stop it. Once it has shipped we can't cancel it.

Orders usually ship within 24 to 48 hours, and you'll get an email with a tracking link when yours does. If it's been longer, or tracking hasn't moved, send us your order number and we'll look into it.

If it hasn't shipped, message us with the order number and the new address as soon as possible and we'll do our best; changes aren't guaranteed once an order is being processed. If it has shipped we can't redirect it, so contact the carrier. For future subscription orders, update the address in your account.

Sorry about that. Check around the door, with neighbors and your household first. If it's still missing, or the item is wrong, send your order number and a photo of what arrived and we'll make it right.

For one-time purchases, enter the code at checkout. Account credits apply to subscription orders only: log in to your account, turn on the credit option, and it applies to your next subscription order automatically.

Update the payment method in your account under Subscriptions and we'll retry the charge.