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12 Costco Products Superfans Say They Would Never Buy Again

Costco enthusiasts spill the beans on their shopping regrets.

 Costco Products Superfans Say They Would Never Buy Again Featured Image
Updated May 15, 2025
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While Costco offers many products and deals fans love, not everything at the famous bulk retailer is a hit.

Costco superfans will tell you that the store's rotisserie chicken is a safe bet or that a lot of the snacks are worth it. 

But some Costco items can be a miss. Here are a few that some superfans will tell you it may be better to avoid buying to unlock the true value of your membership.

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Mango Smoothie

petrrgoskov/Adobe Mango Smoothie

Costco replaced its berry smoothie at food courts nationwide with a mango smoothie. However, many customers urged others to avoid wasting money and skip it altogether, so much so that Costco discontinued the drink.

Some described it as tasting like spoiled baby food, and even kids rejected the less-than-tasty treat from the food court.

So, lesson learned: Stick with the traditional hot-dog-and-drink deal at the Costco food court.

Kirkland Signature Dishwasher Pacs

Courtesy of Costco Kirkland Signature Platinum Performance UltraShine Dishwasher Detergent Pacs

Keeping your dishes sparkling clean may not be the easiest thing to do if you buy the Kirkland Signature Dishwasher Pacs.

Some superfans have complained that the dishwasher pods don't get their dishes as clean as the name brands Costco carries, making this one product you can skip.

Produce

Courtesy of Costco Cosmic Crisp Apples

Produce can be hit-or-miss at Costco, depending on what you're looking for or how much you plan to use.

You may want to avoid Costco's produce section if you live alone or won't finish it quickly, because it could spoil before you get through a bulk amount of bananas or pears.

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Books

scandamerican/Adobe childrens books in a Costco store

You may like picking up new books from Costco's book table, but books are one item where you may not save much by buying them at the warehouse retailer.

Before you pick up a new book at Costco, compare the price with online retailers such as Amazon or Target. You might find you can get a better deal online than at Costco.

Shopping pro tip: This month's best deals

imtmphoto/Adobe woman with shopping bags at mall

June is here, and with it comes the start of summer, sizzling sales, and a fresh wave of markdowns. Keep an eye out for savings on:

  • Tools, grills, and outdoor gear

  • Swimwear and summer fashion
  • Patio furniture and garden decor
  • For grocery savings, stock up on seasonal produce like blueberries, corn, and zucchini

While you're soaking up the sun, retailers are already thinking ahead to back-to-school prep, making June a great time to save on summer essentials and snag fresh deals before the crowds catch on.

Kirkland Signature Milk

Courtesy of Costco Kirkland Signature milk

Like other grocery stores, Costco has its store-brand version of milk that you can buy.

But you might be surprised that Kirkland Signature milk is more expensive than other retailers nearby. Compare the costs at Costco with those of stores like Walmart or Target to see if you can get a better deal.

Kirkland Signature Bath Tissue

Courtesy of Costco Kirkland Signature Toilet Paper

You may think toilet paper is toilet paper, but some superfans think you should ditch the Kirkland Signature stuff for other alternatives.

Toilet paper may be one of those items at Costco where it's better to spend a little more and get the name brand that will hold up better than the less popular store brand.

Soda

Courtesy of Costco 35 can pack of Coca-Cola

You might think buying soda in bulk at Costco will save you money, but keep an eye on the per-unit cost.

Costco's prices may seem expensive because you're buying in bulk, but breaking down the price into a per-cost number can make comparing costs with other stores easier.

For example, a 24-pack of Coca-Cola at Walmart costs 52 cents per can, while a 35-pack of Coke at Costco costs 59 cents.

Bread

Courtesy of Costco Kirkland Signature Rustic Italian Bread

Like produce, Costco's bread can go bad quickly, so you'll want to make sure you use it all soon before it gets stale or moldy.

One of the issues with Costco's bread options is that you may have to pick two loaves and not one, so consider grabbing one loaf at the local grocery store instead.

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Over-the-counter medications

Courtesy of Costco Kirkland Signature allergy medicine

Medications can have an expiration date just like food, so consider that when buying a bulk-size version of medication at Costco.

You may also want to do some comparison shopping when it comes to certain drugs, as you may be able to find the same amount for a cheaper price at another retailer.

Don't assume you'll automatically save money on essentials just because you're buying them from Costco.

Kirkland Signature Protein Bars

Courtesy of Costco Kirkland Signature Protein Bars

Kirkland Signature has its own line of protein bars in different flavors, such as chocolate chip cookie dough, chocolate peanut butter, or brownie.

However, some superfans complained that the bars are hard compared to chewier name-brand versions or that the texture may differ from box to box.

Kirkland Signature Chicken Bakes

Courtesy of Costco Chicken bake

A highlight for some shoppers is the chicken bakes at the food court featuring chicken, cheese, bacon, and other ingredients stuffed in a pastry shell and toasted up at Costco.

On the other hand, the box of Kirkland Signature Chicken Bakes you can buy in the frozen foods section may not be up to the same food-court standards.

Instead, grab a fresh one on your way out the door and leave the frozen ones in the Costco freezer.

Quick tips: How to save on your grocery bill

Arnell Koegelenberg/peopleimages.com/Adobe woman using smartphone at grocery store

Grocery shopping doesn't have to break the bank when you use the right strategies. Here are three quick tips for reducing food expenses:

  • Buy store brands instead of name brands whenever possible.
  • Always make sure to compare unit prices, not just sticker prices.
  • Join your store's loyalty program so you don’t miss out on member discounts.

Even though something like choosing coupons in your grocery store app can feel like an annoying task, the savings can really add up.

Fresh muffins

Courtesy of Costco Costco Kirkland Signature Muffins

Another potential perishable is Costco's muffins from its bakery selection.

The muffins can be delicious and come in a variety of delicious flavors. But superfans complain that if you don't eat your dozen muffins quickly, they'll go bad, and you'll have to toss them.

Bottom line

JHVEPhoto/Adobe costco store in markham torronto canada

One of the great things about shopping at Costco is the store's generous return policy. If you don't like it, simply return it, and you'll get a refund.

Costco is also a great place to save money on groceries, but you may want to make a list before you go in to stick to your budget. 

Remember to try Costco's store label Kirkland Signature, which can also help you keep some extra cash in your pocket.

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