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Mighty K9 Money-Back Guarantee: How to Claim a 30-Day Refund

Quick answer

Mighty K9 has a 30-day money-back guarantee, and empty bottles count.

Call +1 (302) 200-3480 with your order ID, then mail the bottles with your full name, email and order ID. Return shipping is not included. Refunds are issued 3-5 business days after the return is credited.

Compare the 1, 3 and 6 bottle packs.

Written by the Mighty K9 editorial teamUpdated

Guarantee

What is the Mighty K9 money-back guarantee?

Mighty K9 comes with a 30-day money-back guarantee, according to the sales page. It includes empty bottles, so you can use the drops and still ask for your money back.

Return shipping is not included. You pay to mail the bottles back, and a tracked service is the safest choice. Everything else runs through the order desk at +1 (302) 200-3480, which can see your order and start the refund.

The Mighty K9 30-day empty bottle guarantee seal
The brand's guarantee seal. It describes a purchase policy, not a promise that the drops will work for your dog.

Themightyk9 is a stocking partner, not the manufacturer. We explain the terms as the sales page shows them. The order desk decides each claim.

30 days

How does the Mighty K9 30-day window work?

Four checkpoints that keep you inside the window with time to spare.

  1. Day 1

    Order and keep the email

    Your order ID is the key to every refund call. Save the confirmation email.

  2. Day 10

    Check in

    Note how your dog rises, climbs stairs and walks. Write it down on the same day each week.

  3. Day 20

    Decide

    Not a fit? Call the order desk now, while there is time to mail the bottles back.

  4. Day 30

    Window closes

    Call +1 (302) 200-3480 before day 30. The sales page says empty bottles count; return shipping is on you.

What counts

What does the Mighty K9 guarantee cover?

It covers orders placed through the brand's checkout within 30 days, opened or empty bottles included. It does not cover your return postage.

What the Mighty K9 money-back guarantee covers, as shown on the sales page on October 11, 2026
ItemCovered?Note
Unopened bottlesYesMail them back with the rest of the order
Opened or partly used bottlesYesClose the dropper tightly before packing
Empty bottlesYesThe sales page includes empty bottles
Return shippingNoBuyer pays return shipping. Use a tracked service.
Claims after day 30Not statedCall the desk; do not count on it
Marketplace or reseller ordersNot confirmedThe desk can only see official orders

How to claim

How do I claim a Mighty K9 refund?

Call the order desk at +1 (302) 200-3480 with your order ID. The call opens the claim, and the desk tells you what to send.

  1. Find your order ID

    It is in the confirmation email. Keep that email until the refund posts.

  2. Call the order desk

    Phone +1 (302) 200-3480 and say you want to use the 30-day money-back guarantee. The sales email, [email protected], also handles order questions.

  3. Pack every bottle

    Full, partly used and empty bottles all go back. Seal the droppers and wrap the glass.

  4. Mail it with tracking

    Write down the tracking number. It is your proof the box arrived.

Do not send a claim to [email protected]. That inbox runs the website and cannot see or refund any order.

Return address

Where do I mail Mighty K9 bottles for a refund?

Mail returns to 1700 Broadway, Floor 28, New York, NY 10019, USA. Include a note with your full name, email and order ID, so the bottles can be matched to your order.

What goes in the box

All the bottles from the order, empty ones too, plus a slip with your name, the email used at checkout and your order ID. Without that slip, a return can sit unmatched.

The return address is not our New York office on Madison Avenue. Use the Broadway address above unless the order desk gives you a different one on the phone.

Try Mighty K9 for 30 days2 mL a day · $89.99 a bottle · free U.S. shipping over $100

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Timing

When will my Mighty K9 refund arrive?

Expect the refund 3-5 business days after the returned bottles are credited, then 5-10 days for your card issuer to post it. In total, plan for about two to three weeks after the box arrives.

The clock starts when the returned bottles are logged, not when you mail them. That is why tracking matters. If two weeks pass after delivery with no refund email, call +1 (302) 200-3480 with your order ID and tracking number.

Refunds go back to the card or payment method you used. The full rules are in the Mighty K9 refund policy.

Fair warning

Is 30 days long enough to judge Mighty K9?

Probably not, by the brand's own timeline. The sales page says full results come at weeks 8-12, but the money-back window closes at 30 days.

So if you buy three or six bottles, you will still be early in that timeline when the window closes. You have to decide by day 30 whether to keep going. We think buyers should know that before they order a large pack.

  • Write down how your dog rises, climbs stairs and walks on day 1.
  • Check again on the same day each week, at the same time.
  • Decide by about day 20, so there is time to call and mail the box.

Joint changes in a dog have many causes. Limping, crying out, trouble rising, or stiffness that does not ease need a vet exam, whatever you decide about the drops. See the Mighty K9 results timeline for what is and is not known.

Brand store orders

What if I bought Mighty K9 from the brand's own store?

Orders placed directly on the brand's store at mighty-k9.com follow that store's process. The brand's store describes emailing for a return authorization (RMA) number before you send anything back.

The brand's sales page lists [email protected] and 713-432-9245 for the maker, Mighty-K9 in Houston, Texas. Ask for the RMA number first, then write it on the package. Our order desk cannot process returns for orders placed on the brand's store.

Not sure where you ordered? Look at the sender of your confirmation email. If it came through the checkout linked from this site, use +1 (302) 200-3480.

Limits

What does the Mighty K9 guarantee not promise?

The guarantee is a refund policy, not a promise of results. It means you can get your money back within 30 days. It does not mean the drops will change how your dog moves.

There is no study of Mighty K9, ESS60 or C60 for dog joints or mobility (PubMed search, C60 and dogs). The empty-bottle terms are a fair point in the brand's favor, because they let you try the product without losing the full price. The contact page lists every phone and email in one place.

FAQ

Mighty K9 guarantee FAQ

Does Mighty K9 have a money-back guarantee?

Yes. A 30-day money-back guarantee, empty bottles included, is shown on the sales page. Mailing the bottles back is at your cost; return shipping is not included. To start a claim, call the order desk at +1 (302) 200-3480 with the order ID from your confirmation email.

Can I return empty Mighty K9 bottles for a refund?

Yes, the sales page says empty bottles are included in the 30-day guarantee. Send back every bottle from the order, full, partly used and empty, with a note showing your full name, email and order ID. Use a tracked service, since return shipping is on you.

Who pays return shipping on Mighty K9?

You do. Return shipping falls outside the money-back guarantee, per the sales page. Use a tracked mail service and keep the tracking number, because the refund clock starts only when the returned bottles are logged at the return address in New York.

What is the Mighty K9 return address?

Mail returns to 1700 Broadway, Floor 28, New York, NY 10019, USA. Include your full name, the email you used at checkout and your order ID. Call the order desk at +1 (302) 200-3480 first, in case they give you different instructions for your order.

When will my Mighty K9 refund arrive?

Refunds are issued 3-5 business days after the returned bottles are credited, then your card issuer takes 5-10 days to post it. Plan for about two to three weeks after delivery. If nothing arrives by then, call the order desk with your order ID and tracking number.

Is the Mighty K9 guarantee long enough?

It is shorter than the brand's own timeline. The sales page says full results come at weeks 8-12, but the money-back window is 30 days. Track your dog weekly and decide by about day 20, so you still have time to call and mail the bottles back.

How do I return Mighty K9 bought on the brand's website?

Orders placed directly on mighty-k9.com follow the brand store's process. The store describes emailing for a return authorization number first. The sales page lists [email protected] for the maker. Our order desk only handles orders placed through the checkout linked from this site.

Who wrote this

Written and reviewed by

Written byThe Mighty K9 editorial teamThemightyk9, the Mighty K9 U.S. shop

Plain-language pages built from the label panel, the sales page and linked veterinary and public sources.

Medically reviewed byDr. Aimee Duffy, MD, PhysicianRole: Medical reviewerReview date: October 12, 2026

Last updated . Both our editorial standards and how we check reviews are open to read. This website is run by Themightyk9, the Mighty K9 U.S. shop and a stocking partner, not by the manufacturer. Buying through our order links earns us money.

Mighty K9 U.S. shop, a stocking partner

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