12 Things Shoppers Do That Costco Employees Can’t Stand

Costco is a magical land where a single shopping trip can somehow include a kayak, a five-pound bag of shredded cheese, a patio heater, and a rotisserie chicken that smells like happiness. But behind every oversized cart and towering pallet of paper towels are employees trying to keep the warehouse safe, organized, and moving at the speed of a very determined family buying snacks for the apocalypse.

Most Costco shoppers are polite, practical, and just trying to find the frozen dumplings before someone else takes the last box. Still, employees regularly encounter a few habits that turn an ordinary warehouse shift into a reality show called Survivor: Bulk Buy Edition.

Editor’s note: Not every Costco employee will feel the same way about every shopper behavior. These are common warehouse etiquette issues reported by retail workers and Costco employees, along with practical ways customers can make shopping easier for everyone.

Why Costco Etiquette Matters More Than You Think

A Costco warehouse is not a quiet boutique where you can casually browse candles while sipping iced coffee. It is a high-traffic environment filled with large carts, stacked merchandise, forklifts, food samples, families, and people attempting to decide whether they truly need a 36-pack of sparkling water.

Small shopper habits can create bigger problems than they seem. A cart parked sideways can block an entire aisle. A forgotten package of frozen shrimp can become food waste. A shopper who arrives at checkout without a membership card can slow down dozens of people behind them.

The good news is that Costco shopping etiquette is not complicated. It mostly comes down to awareness, patience, and remembering that employees are peoplenot human GPS systems with aprons.

1. Blocking the Aisles With Carts

Costco carts are not tiny. They are basically wheeled studio apartments. When shoppers stop in the middle of an aisle to compare two giant jars of peanut butter, everyone behind them suddenly becomes trapped in a slow-moving traffic jam.

Employees often have to move pallets, restock merchandise, guide customers, and keep walkways clear. A cart parked sideways near the rotisserie chicken section or sample station can turn a normal shopping path into an obstacle course.

How to shop smarter

Pull your cart to the side before checking your phone, studying labels, or debating whether your household truly needs a gallon of queso. Treat the aisle like a road: keep moving when possible, and do not park in the middle unless you enjoy accidental cart bumper cars.

2. Leaving Cold or Frozen Items in Random Places

This is one of the biggest frustrations for grocery and warehouse employees. A shopper changes their mind about frozen pizza, chicken nuggets, or a giant tub of ice cream and leaves it on a shelf next to towels or shampoo.

That item may no longer be safe to sell. Employees then have to remove it, dispose of it, and adjust inventory. What looked like a harmless “I changed my mind” moment can become wasted food, wasted money, and extra work.

The better move

If you decide you do not want a refrigerated or frozen product, return it to the correct department or hand it to an employee. It might feel slightly awkward, but it is far better than creating a sad little puddle of melted mozzarella near the socks.

3. Treating Free Samples Like a Personal Buffet

Costco samples are one of the great joys of warehouse shopping. A tiny piece of dumpling can somehow convince people they are attending a culinary festival. But there is a difference between enjoying a sample and treating the station like an all-you-can-eat restaurant.

Employees and demonstration workers may get frustrated when shoppers crowd the station, reach over barriers, demand special requests, or repeatedly loop back for extra servings while blocking traffic.

Free samples are meant to help shoppers try products, not replace lunch for an entire family of five.

Sample station manners

Take one sample when offered, thank the person serving it, and keep the line moving. Do not demand a custom-made version, ask for an entire serving tray, or hover over the station like a hawk monitoring a pizza oven.

4. Dropping Trash Wherever It Lands

Sample cups, napkins, empty drink containers, food court wrappers, and random packaging sometimes end up in carts, aisles, shelves, or tucked behind pallets. Employees have reported finding trash in places that clearly were not designed to be garbage cans.

Costco warehouses usually provide trash bins around food courts, sample stations, and exits. When shoppers ignore them, staff members have to clean up messes while also managing customers, stocking shelves, and handling checkout traffic.

Keep the warehouse civilized

Use the nearest trash can. If your child finishes a snack in the cart, toss the wrapper before leaving. A warehouse is already busy enough without employees having to perform an archaeological dig beneath a stack of paper towels.

5. Opening Food Packages and Mixing Produce

Some shoppers open packages of fruit, bakery items, or produce to build what they consider the “perfect” box. They may switch apples between containers, open berry clamshells, or rearrange baked goods until every muffin looks like it was chosen for a magazine cover.

That behavior can create food safety concerns, damage packaging, confuse inventory, and make other shoppers reluctant to buy the product afterward. Nobody wants to wonder how many strangers have handled their grapes before dinner.

What to do instead

Choose the best unopened package available. If the quality looks poor, ask an employee whether more product is expected or whether another display is available. Do not turn the produce department into a build-your-own-fruit-sculpture workshop.

6. Using Someone Else’s Membership Card

Costco memberships are tied to individual members, and the card is generally not meant to be passed around like a library card from 1998. Employees may need to verify membership at the entrance and checkout, especially when a photo appears on the card.

Trying to use someone else’s card puts employees in an awkward position. They have to enforce company policy while dealing with customers who may become annoyed, embarrassed, or suddenly very interested in explaining their cousin’s vacation schedule.

Make entry easier

Bring your own membership card or use the digital membership option if available. Guests can accompany members, but the member should be the person making the purchase. It is simpler, faster, and less dramatic for everyone involved.

7. Showing Up at Checkout Unprepared

Checkout lines move quickly when shoppers are ready. They slow down when someone reaches the register and begins searching through a purse, checking every jacket pocket, calling a spouse, or attempting to remember where their membership card went.

Employees also deal with shoppers who are surprised by accepted payment methods, forgotten coupons, complicated transaction splits, or oversized items placed awkwardly on the belt.

Checkout survival tips

Have your membership card and payment method ready before you reach the register. Keep large items in the cart when appropriate, follow employee instructions, and place smaller items on the belt neatly. Your fellow shoppers will silently thank you, even if they are too busy guarding their 48-count yogurt supply to say it.

8. Arguing About the Receipt Check at the Exit

Many shoppers understand that receipt checks are part of the Costco warehouse experience. Still, some people become irritated when an employee asks to review the receipt before they leave.

The exit check is designed to help confirm that purchases were processed correctly and that larger items were not missed during checkout. It is not a personal accusation, a secret interrogation, or a test of whether you can remember every item in your cart.

Make the exit smoother

Keep your receipt handy after paying. When you reach the exit, present it quickly and allow the employee to complete the check. The process usually takes only a few seconds, which is less time than it takes to decide whether you should buy another bag of trail mix.

9. Hovering Around Employees Restocking Popular Items

Fresh muffins, rotisserie chickens, bakery items, seasonal products, and popular deals can create serious excitement. Some shoppers hover around employees while they are restocking, reach into stock carts, or ask repeatedly when a product will be ready.

Employees understand that customers want fresh items. But standing directly in their work area can slow restocking, create safety issues, and make it difficult for them to do their job.

How to wait without becoming a warehouse shadow

Give employees room to work. Ask politely when an item may be available, then step aside and continue shopping. If a product is out, do not treat the employee like they personally hid the last chicken behind a pallet for themselves.

10. Abandoning Carts in Parking Lots

Returning a Costco cart can feel like a workout, especially after loading a trunk with enough groceries to feed a youth soccer league. But abandoning carts in parking spaces, behind vehicles, or near disabled-access areas creates safety and damage risks.

Employees have to collect stray carts in all kinds of weather, often while navigating busy parking lots. A loose cart rolling into someone’s vehicle is not a great way to end a discount-shopping adventure.

The easy solution

Use the designated cart corrals. If you need help loading a heavy item, ask an employee. A few extra steps can save another customer from finding your abandoned cart gently leaning against their bumper like it pays rent there.

11. Bringing Pets That Are Not Service Animals

People love their pets, and many dogs have excellent customer-service personalities. Still, warehouses that sell food have rules around animals. Service animals are generally allowed when required by law, but ordinary pets are not automatically welcome inside.

Employees can be placed in an uncomfortable situation when they have to ask about an animal or explain warehouse policy. They are not trying to insult your dog’s outfit. They are trying to follow safety and health requirements.

Keep your shopping trip simple

Leave pets safely at home unless they are trained service animals. Emotional support, cuteness, and a tiny bandana do not necessarily change warehouse policy. Your dog may be disappointed, but they will probably forgive you after a treat.

12. Being Rude to Employees or Other Shoppers

The biggest issue is not usually carts, receipts, or sample cups. It is basic rudeness. Employees often deal with impatient shoppers, yelling, insults, aggressive behavior, people talking loudly on phones during transactions, and customers who treat staff like they are personally responsible for every out-of-stock item in the building.

Retail work can be physically demanding and emotionally draining. Employees are helping with memberships, checkout, returns, inventory, food service, loading assistance, and countless questions throughout the day. A little patience can make a major difference.

Remember the human behind the name tag

Say hello. Ask questions respectfully. Do not blame employees for company-wide policies, crowded weekends, product shortages, or the fact that your favorite snack disappeared six months ago. You may not solve the mystery of the missing cinnamon rolls, but you can avoid making someone’s shift harder.

How to Be the Costco Shopper Employees Appreciate

You do not need to shop like a warehouse etiquette expert with a clipboard and whistle. Just follow a few simple habits:

• Keep your cart out of the main traffic flow.
• Return unwanted cold items to the right place.
• Throw away trash and sample cups.
• Keep your membership card and payment ready.
• Respect employee work areas and safety rules.
• Return your cart to a designated corral.
• Be patient with staff, especially during busy hours.

Costco can be chaotic, crowded, and occasionally filled with people buying enough toilet paper to prepare for a meteor strike. But it can also be efficient, enjoyable, and surprisingly pleasant when shoppers remember that everyone is sharing the same giant warehouse.

Costco Shopping Experiences: What Employees Notice on Real Warehouse Days

A typical Costco shift is a parade of small moments. Some are funny. Some are frustrating. Many are completely avoidable. Employees may start the morning by arranging bakery items, helping someone find a television, answering a membership question, and directing a shopper toward the restroom. Before lunch, they may also have to remove a thawing frozen entrée from the clothing department, retrieve a cart from the middle of the parking lot, and explain why a dog in a stroller cannot simply browse the snack aisle because it is “basically family.”

One of the most common experiences employees notice is how quickly shoppers become distracted. A person may stop their cart in the center of an aisle to answer a phone call. Another shopper may leave a cart at the entrance to the rotisserie chicken section while they browse samples. Suddenly, the aisle is blocked, people are squeezing around each other, and an employee trying to move merchandise has nowhere to go. Nobody meant to create a traffic jam, but Costco traffic jams are often built one distracted cart at a time.

Employees also notice the difference between customers who ask for help and customers who demand it. A polite shopper might say, “Excuse me, do you know if more of these will be coming out?” That question gives an employee a chance to help. A rude shopper may accuse the employee of hiding inventory, complain about a discontinued product, or insist that a cashier personally change store policy. The first interaction takes seconds. The second can drain energy from an entire shift.

Sample stations create another memorable part of warehouse life. Most shoppers take a bite, say thank you, and continue on their way. But employees and demonstration workers may also see people crowding around stations, reaching ahead of others, asking for special cooking instructions, or returning multiple times as if they are collecting loyalty points for mini quesadillas. The funniest part is that shoppers sometimes feel guilty about taking a sample without buying the product, then place an item in their cart and abandon it two aisles later. Employees would usually rather customers simply enjoy the sample and move along honestly.

Returns can reveal the best and worst sides of customer behavior. Costco’s satisfaction guarantee gives members confidence, and legitimate returns are a normal part of retail. But employees may encounter products that were clearly used for a long time, damaged through misuse, or returned far beyond what any reasonable person would consider a test period. A fair return is easy to process. An argument over a worn-out item from years ago can turn a simple transaction into a courtroom drama featuring a blender as Exhibit A.

The most positive Costco experiences often come from ordinary courtesy. Employees remember shoppers who move their carts aside, return cold items properly, say thank you at checkout, and help keep aisles clear. They notice parents who keep children nearby, customers who return carts, and members who understand that a receipt check is simply part of leaving the warehouse.

In the end, good Costco etiquette is not about being perfect. Everyone forgets an item, gets distracted, or misjudges the size of a cart at some point. The goal is simply to shop with awareness. When customers make small considerate choices, employees can spend less time fixing preventable problems and more time helping people find the giant jar of peanut butter they came for in the first place.

Final Thoughts

Costco employees are not asking shoppers to become warehouse robots. They just want customers to shop with common sense, patience, and a little awareness of the people around them. Keep aisles open, handle food responsibly, respect membership and safety rules, and treat employees like human beings.

Do that, and your next Costco run may be smoother, faster, and far less likely to end with a cart traffic jam near the free samples.