There may be a lot of apples and bananas at Costco, but that package of apples may go bad faster than you think if you don't eat them quickly enough.
Those apple crumb muffins or buttery croissants may look enticing, but don’t put them in your cart just yet.
While you can keep sealed ketchup or pickle relish in the back of your cupboard for several months, the clock starts ticking once you break the freshness seal.
It might be easier to buy a lot of diapers at once if your kids go through a lot of them every day. A box of them may cost more than buying them in a shop or online, but each diaper may cost less.
At times, Kirkland Signature items at Costco might be a good deal. But when it comes to dishwasher detergent, you might want to avoid this brand.
If you just bought a big container of coffee from Costco, coffee experts may tell you that it starts to lose its taste and strength soon after it's ground.
Some Costco shoppers may like buying a staple like toilet paper in bulk so they don’t have to worry about constantly restocking it in the bathroom cabinet.
You may be surprised to find out that your local grocery store already marks down soda on a regular basis.