Guessing which companies make Kirkland Signature products has become a sport for Costco fans. This time, we're wondering who ...

Costco's private label, Kirkland Signature, offers budget-friendly dupes of numerous products. Here's what we know about the ...

Costco's tuna is actually manufactured by one of the biggest name brands in the canned fish industry: Bumble Bee Tuna. And while Costco sells its tuna for what amounts to $2.37 per can ...

But what might surprise you are some of the big brands behind popular Kirkland products at Costco. They range from Bumble Bee ...