Walmart-owned Sam's Club is way behind Costco in sales; here's how they're looking to close the gap

Walmart-owned Sam's Club is looking to labels when it comes to competing with Costco.

Private labels, that is. Such as the quality, quantity and type of items from its private brand Member's Mark in order to take on Costco's Kirkland Signature.

The war between name and store-brand products has gone on for decades. Some would argue that household items like toilet paper, trash bags and paper towels are nearly identical, but what about specialty foods and clothing?

Sam's Club and...