When Costco customers see the red and black Kirkland Signature label, they know they’re going to get a good product at a great price. But they don’t always know who’s making it.

While plenty of the names behind Kirkland Signature products are public knowledge — some are printed right on the box — others remain a closely guarded secret.

We've done some sleuthing through Reddit threads, news reports, recalls and issues of the store magazine Costco Connection to verify the claims. From Costco coffee to hearing aids, there are plenty of Kirkland Signature products that boast of big brand origins.

We've done some sleuthing through Reddit threads, news reports, recalls and issues of the store magazine Costco Connection to verify the claims. From Costco coffee to hearing aids, there are plenty of Kirkland Signature products that boast of big brand origins.

Here are the names we can confirm and the myths we can debunk, assuming no recent supplier swaps:

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