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A crowded Costco store with anxious shoppers filling carts with bulk items like water and toilet paper; people look stressed and overwhelmed under the large Costco sign.
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For some, Costco is a wonderland of giant jars of pickles, large inexpensive bottles of liquor, and pillow-size bundles of cheap socks. But while there are obvious benefits to shopping there, avoiding common Costco shopping mistakes could mean some people are better off just saying “no” to Costco.

The Tired

The Tired
a katz/shutterstock

Costco trips are not for the weak of heart or spirit, and anyone who isn’t well-rested will be made miserable by the giant, bustling stores with unlabeled aisles. Shoppers must have their wits about them to snag items quickly, keep track of huge shopping lists, and deal with the lines that build up during busy times of day. Tired? Better to stay home and nap than bother trying to navigate Costco.

The Stoned

Costco Food Court
Twy J./Yelp

People with weed-induced munchies, heed this warning: Stay away from Costco. The allure of the huge frozen yogurt cones and slices of pizza in the concessions area is strong, but it’s way too easy to wander the rest of the store in a daze and leave with a three-month supply of bananas, frozen fish, and SpaghettiOs. (These foods don’t make any sense in combination, and neither does going to Costco while blazed.)

Parents Who Can’t Say ‘No’ to Children

giant teddy bears at Costco
Costco: not called “Big Box Store” for nothing! by Bennilover ((CC BY-ND))

Bringing kids to Costco can be a problem for parents, grandparents, or guardians of persuasive children. Head into Costco with a kid who can’t be refused and be ready to walk out with more T-shirts, toys, and fruit snacks than any child would deserve for three consecutive birthdays. Costco can be a great place to pick up stuff for kids, but it’s better to leave them behind and bring home a surprise. 

Compact Car Owners

customers shop at Costco on March 12, 2013 in Los Angeles, California
Kevork Djansezian/Getty Images

Costco seems like a great idea until there are three carts of loot to haul out to the car and nowhere near enough space to accommodate everything. The returns line isn’t exactly a carnival, so don’t expect to easily take back what you bought if it doesn’t fit. Unless someone can babysit the carts during multiple car trips to and from home to unload, it’s best to hitch a ride with a friend who has a truck or minivan, sign up for a shared-car service, find a rental deal, or even call a taxi company with bigger vehicles.  

Anyone With a Hangover

aisle at costco
a katz/shutterstock

Costco can be very unpleasant for people who had a bit too much to drink and not enough sleep the night before. The huge warehouses have harsh, penetrating lights to illuminate every nook, cranny, jumbo jar of mustard, and quadruple box of cereal. Being surrounded by millions of items can be flat-out overwhelming to people who don’t drink at all, but to someone who’s still working those last couple glasses of pinot out of their system, the sheer visual noise of all the stuff and actual noise from chattering people can be too much of a headache. 

Shoppers With No Impulse Control

Costco shopping cart
a katz/shutterstock

One of Costco’s many blessings is the samples provided regularly to shoppers. But those can be a curse for people inclined to scoop up and buy whatever they taste. Depending on the time of day, a shopper could get lucky and score 10 or more samples — great in theory, but not if it leads to a cart overflowing with miniature hot dogs, granola, soda, and crackers with cheese, along with a bill of a couple hundred bucks just for finger food. 

People Who Hate Crowds

Costco customers wearing masks
felixmizioznikov/istockphoto

Costco can be an extremely crowded place (even with pandemic restrictions), particularly in the early evening and before events such as the Super Bowl. Anyone who hates big crowds and long lines should skip the trip, no matter how tempting the discounted frozen wings may be. It’s just not worth the frustration, sweat, and bulging veins.

Anyone in a Hurry

people in line outside Costco
Martin Chavez/istockphoto

People with low levels of patience also might feel like they’re in purgatory at Costco. It’s tough to avoid a lot of waiting and maneuvering around people and their massive carts while they pore over lists or await help reaching items high on the shelves. Then there’s waiting in clogged lines to check out and leave the place — and forget about grabbing a slice of pizza or a hot dog in the loud, crowded food court once the shopping is done. 

Agoraphobes

Costco store and parking lot exterior
Thomas De Wever/istockphoto

Like the bulk items it carries and sells, Costco is giant. The massive warehouses could swallow a small village, so people who fear big public spaces should stay as far from Costco as possible. There are other places to buy bulk items or grocery shop on the cheap, so it’s better not to cause extra stress by walking into what feels like the biggest store on earth.

Tiny-Apartment Dwellers

Senior couple shopping at Costco
Joe Raedle/Getty Images News/Getty Images North America

Unless the plan is to sleep on the bulk rolls of toilet paper and paper towels, buying at Costco isn’t the best plan for anyone who lives in a small apartment or studio. There just isn’t enough room to stock up on most of the massive bulk items that are such a good value at Costco.

People Who Live Alone and Rarely Cook

A woman in a red knit hat and beige coat leans on a shopping cart in a grocery store aisle, looking thoughtful or concerned. Shelves of products are visible on both sides of the aisle.
Drazen Zigic/istockphoto

Costco’s business model revolves around large bulk quantities, which can easily lead to food waste if you’re cooking for just one person. Even good deals can become expensive if items expire before you use them. Many experts note that bulk stores make the most sense for families or households that can actually finish the products.

People Without Freezer or Pantry Space

A variety of groceries on a kitchen counter, including eggs, bread, bagels, orange juice, cheese, vegetables, instant noodles, chips, milk, canned goods, cream cheese, and seasoning packets.
Fluffy-Car-3872/Reddit

Even if you have a normal-size home, Costco shopping often requires extra storage space for frozen and shelf-stable items like bulk meat, frozen meals, and large multi-packs. Bulk purchases are designed to be stored long-term, which can be difficult without a large freezer or pantry.

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Split image: On the left, a person pushes a shopping cart while holding a list in a grocery store. On the right, a person with a basket looks at their phone in front of a supermarket freezer section.
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Meet the Writer

Elizabeth King is a Chicago-based freelance writer. She covers culture, news, politics, money, and travel. Elizabeth received her undergraduate degree in philosophy from DePaul University in 2011.