Buying
Mighty K9 Guarantee: How the 30-Day Money-Back Promise Works
The sales page offers a 30-day money-back guarantee on Mighty K9, and it accepts empty bottles. Return shipping is not included. To use it, call the order desk at +1 (302) 200-3480 with your order ID or email [email protected] for a return (RMA) number, then mail the bottles back with tracking.
Written by the Mighty K9 editorial teamUpdated
The short version
Is there a money-back guarantee on Mighty K9?
Yes. The Mighty K9 sales page shows a 30-day money-back guarantee, and it accepts empty bottles. You pay to mail the bottles back; that cost is not refunded.
In plain terms, you can give the drops to your dog, use up the bottle, and still ask for your money back within the window. You do not need to keep a bottle sealed to qualify.
A guarantee is a purchase policy. It is not a promise that the drops will change anything for your dog. No study has tested ESS60 or this product in dogs with joint problems, which is exactly why a fair refund window matters.

Your 30 days
How does the Mighty K9 30-day window play out?
A simple plan so you can decide in time.
- Day 1
Order and keep the email
Your order ID is the key to every refund. Save the confirmation email.
- Day 10
Check in
Give 2 mL a day with the same meal. Note stairs, car jumps and walk length.
- Day 20
Decide
Not for your dog? Contact the order desk now, while there is time to get a return number and mail the bottles.
- Day 30
Window closes
The sales page offers 30 days, empty bottles included. Return shipping is not refunded.
Terms
What does the Mighty K9 guarantee cover?
The guarantee covers the price of the bottles you bought through the official sales page, for 30 days, opened or empty. It does not cover what you pay to send them back.
| Item | Covered? | Notes |
|---|---|---|
| Sealed bottles | Yes | Within 30 days |
| Opened or partly used bottles | Yes | Within 30 days |
| Empty bottles | Yes | Mail them back; do not throw them out |
| Return shipping | No | Buyer pays return shipping. Use a tracked service. |
| Orders from third-party sellers | Probably not | The order desk cannot find an order it did not take |
| Requests after day 30 | Not published | Ask the order desk; do not count on it |
Policies can change. Read the guarantee on the live order page before you buy, and again before you send anything back.
Step by step
How do I use the Mighty K9 money-back guarantee?
Contact the order desk first, get a return number, then mail the bottles. Do not mail anything before you have that number.
Contact the order desk
Call +1 (302) 200-3480 with your order ID, or email [email protected]. Ask for a return (RMA) number.
Pack every bottle
Include full, opened and empty bottles. Put a note in the box with your full name, email and order ID.
Mail with tracking
Send the box to 1740 Broadway, Floor 15, New York, NY 10019, USA. You pay the postage. Keep the receipt and tracking number.
Our Mighty K9 refund policy page covers each step in more detail, plus how long the money takes to reach your card.
Return number
What is an RMA number and why do I need one?
An RMA number is a return authorization code from the order desk. It links your box to your order, so the returns team knows whose bottles arrived and whose money to send back.
The sales page asks buyers to email [email protected] for this number. You can also ask the order desk at +1 (302) 200-3480. A box without a return number or an order ID may sit unmatched for a long time.
- Write the RMA number on the outside of the box, or on the note inside.
- Keep the email that contains it.
- Ask how long the number stays valid, and mail the box before then.
Timing
When should I ask for a Mighty K9 refund?
Ask by about day 20 if the drops are not working out. That leaves time to reach the order desk, get a return number and post the box inside the 30 days.
The sales page does not say whether the 30 days start on the order date or the delivery date. Play it safe and count from the order date. Note the delivery date too, and ask the order desk if you are unsure.
Write down the date you started, the serving size, and how your dog does on stairs, car jumps and walks. Our Mighty K9 results timeline suggests what to watch. A log helps you decide in time, whatever the answer.

Try Mighty K9 for 30 days2 mL a day · $64.99 a bottle · free shipping over $100 · empty bottles OK for refunds
Order nowLimits
What is not covered by the Mighty K9 guarantee?
Return postage
You pay to mail bottles back. Pick a tracked service, even if it costs a little more.
Other sellers
Orders from marketplaces or unknown sites fall under that seller's rules, not the sales page guarantee.
Results
Money back is a purchase policy. It does not mean the drops will change your dog's comfort or movement.
See where to buy Mighty K9 for why the official page matters for refunds.
Your dog first
Should I stop Mighty K9 and ask for a refund if my dog seems unwell?
Stop the drops and call your vet first, then the order desk. Your dog's health comes before the paperwork.
Each 2 mL serving is pure fat and adds 16.2 calories. Vomiting, diarrhea, belly pain or a dog that stops eating can point to a fat-related stomach problem, including pancreatitis (Animal Medical Center, n.d.). A dog that starts limping badly or will not put weight on a leg also needs a vet, not a different supplement.
Once your dog is settled, contact the order desk. A health concern is a fair reason to use the guarantee, and you can return the bottles, empty or not.
Who to contact
Who handles Mighty K9 refunds?
The BuyGoods order desk handles refunds, not this website. We are the U.S. retail partner for Mighty K9 and cannot see orders.
Order support: tracking, refunds
+1 (302) 200-3480
[email protected]
BuyGoods order desk. This desk can see your order. Have your order ID ready.
Return number (RMA)
The sales page asks you to email this address for a return number before mailing bottles back.
This website
Mon-Fri 9:00am-5:00pm ET. Pages, typos, privacy, press. This inbox cannot see orders.
Office and returns (New York)
Office: 590 Madison Avenue, Floor 21, New York, NY 10022
Returns: 1740 Broadway, Floor 15, New York, NY 10019
Mail only. Include your full name, email and order ID. Buyer pays return shipping. Use a tracked service.
Try it
Ready to try Mighty K9 with the guarantee?
Order through any button on this site to keep the 30-day guarantee in place. One bottle at $64.99 covers the whole window for one dog.
FAQ
Mighty K9 guarantee FAQ
Is there a money-back guarantee on Mighty K9?
Yes. The sales page shows a 30-day money-back guarantee that accepts empty bottles. Return shipping is not included, so you pay to mail the bottles back. Confirm the live terms on the order page before you buy.
Can I return empty Mighty K9 bottles?
Yes. The sales page says empty bottles are accepted under the 30-day guarantee. Keep every bottle, even when it runs dry, and mail them back with your full name, email and order ID after you get a return number.
How do I get an RMA number for Mighty K9?
Email [email protected] or call the order desk at +1 (302) 200-3480 with your order ID. The return (RMA) number links your box to your order. Get it before you mail anything, and write it on the box or the note inside.
Is return shipping free for Mighty K9?
No. Per the sales page, the guarantee does not cover return shipping. You pay the postage to send bottles to the New York returns address. Use a tracked service and keep the receipt until your refund posts.
Does the Mighty K9 guarantee start on the order date or the delivery date?
The sales page does not spell that out. The safe choice is to count from your order date, start the drops soon after the box arrives, and contact the order desk by about day 20 if you plan to return it. The desk at +1 (302) 200-3480 can confirm your exact deadline.
Is the Mighty K9 guarantee a scam?
The terms on the sales page are specific: 30 days, empty bottles accepted, return shipping not included, and a real order desk at +1 (302) 200-3480. The fine print to remember is the postage you pay and the need for a return number before you mail.
Does the guarantee cover Mighty K9 bought on Amazon?
Probably not. The guarantee is offered on the official sales page, and refunds are matched by order ID. A marketplace order follows that store's own return rules, which may not accept opened or empty bottles.
Who wrote this
Written and reviewed by
Plain-language pages built from the bottle label, the sales page and linked veterinary and government sources.
Last updated . Read our editorial standards and how we check reviews. This website is run by a U.S. retail partner, not by the manufacturer. This site is paid a commission when you buy through our order links.
Keep reading
More about Mighty K9
U.S. retail partner for Mighty K9
Ready to try Mighty K9?
Pick a pack. One 2 mL serving a day in your dog's food, and every pack covers the 30-day money-back window.
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