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10 Ways to Save Big at Warehouse Clubs

There are great deals to be had at Costco, Sam's Club, and BJ's, but you still have to keep a close eye on the bottom line. Use these tips to make sure you're saving (and not losing) money when shopping at big-box stores.

By Jonna Gallo Weppler

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Kirkland laundry detergent
Courtesy of Costco Wholesale
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Stock up on household staples.

Buy large containers of frequently used household supplies such as dishwashing liquid, laundry detergent, ketchup, and mustard. Then, use a funnel to decant them into regular-size containers that are easy to use.

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