Costco is known for quality and value, but even its most loyal shoppers occasionally encounter products that don’t meet expectations. Whether it’s food that falls short on freshness or household goods with unexpected flaws, certain items have sparked customer complaints. In this article, we’ll take a closer look at the Costco products that have left shoppers frustrated.
Fresh Produce
Costco’s fresh produce frequently annoys customers, with many reporting that fruits and vegetables spoil faster than expected. Because Costco sells produce in bulk, shoppers often discard food before they can use it, leading to unnecessary waste and expense.
Certain items, such as Earthbound Organic Caesar Salad Kits and organic Brussels sprouts, have drawn criticism for poor quality, including wilted lettuce and pest infestations. Other commonly mentioned problem items include strawberries, cucumbers, and avocados, which deteriorate quickly.
Kirkland Signature Milk Jugs
Costco’s Kirkland Signature milk is generally well-received for its quality, but its square-shaped jug has been a persistent pain point for shoppers. Designed for easier shipping and cost efficiency, the unconventional shape makes pouring challenging, leading to frequent spills.
Despite the milk being fine, customers continue to express frustration with the jug’s awkward handling. Costco has acknowledged the issue and may consider design improvements to address the complaints.
Kirkland Signature Dishwasher Detergent
Kirkland Signature Dishwasher Detergent has drawn complaints from users who say it doesn’t dissolve properly, leaving a cloudy film or residue on dishes and dark marks on silver-plated cutlery. Some customers have also reported skin irritation or allergic reactions after using the product.
While its eco-friendly packaging is a plus, effectiveness remains a concern. If trying a new detergent, it’s advisable to test it on a small load first and have a backup option available.
Kirkland Signature Sparkling Water
Costco’s Kirkland Signature Sparkling Water has faced recent complaints from customers who say some cans lack carbonation. While the product has been praised for its flavor and value, shoppers report purchasing variety packs with a few—or, in some cases, many—flat seltzers.
The issue appears inconsistent, but frequent enough to frustrate loyal buyers. For those seeking reliably fizzy beverages, this may be a factor to consider before stocking up.
Kirkland Signature Lightly Breaded Chicken Breast Chunks
Costco’s Kirkland Signature Lightly Breaded Chicken Breast Chunks have received mixed reviews from shoppers. Recent complaints highlight textural inconsistencies and quality concerns.
Some customers report finding blood spots, rubbery pieces, or undercooked batter in their purchases. While the nuggets initially gained popularity, frustrations over these issues have led some shoppers to switch to other brands for a more reliable experience.
Kirkland Hard Boiled Eggs
Costco’s Kirkland Signature Hard-Boiled Eggs have faced widespread criticism for their taste and texture. Customers describe them as having an unpleasant, plastic-like flavor and an odd consistency. Some have reported that the eggs taste sour or watery, making them difficult to eat.
Previously favored brands were replaced with this version, leaving many disappointed and seeking alternatives. Shoppers hoping for a reliable, convenient option may consider other hard-boiled egg products.
Kirkland Signature House Blend Whole Bean Coffee
Costco’s Kirkland Signature House Blend Whole Bean Coffee has received mixed reviews, with many shoppers criticizing its roast level. Although marketed as a medium roast, customers report that the beans appear overly dark, resulting in a bitter or burnt flavor. Some find it too harsh compared to other medium roasts, leading them to seek alternatives.
Kirkland Signature Bath Tissue
Costco shoppers have long debated the quality of Kirkland Signature Bath Tissue, with many claiming it has declined in recent years. Some say the tissue is thinner and prone to tearing, while others say it leaves excessive lint or dust behind.
Complaints range from durability issues to concerns about softness, with some finding it too rough and others noting it disintegrates too easily.
Food Court Fountain Drinks
Costco’s food court fountain drinks may be budget-friendly, but many shoppers find their quality inconsistent. Customers report issues with weak flavor, improper syrup balance, and excessive foam, sometimes making it difficult to fill a cup.
Carbonation concerns are common, with some drinks tasting flat or lacking the crispness expected from a fountain soda. Additionally, some shoppers express disappointment over Costco’s choice to offer Pepsi products instead of Coke. For those prioritizing taste and consistency, this may be worth considering before grabbing a drink.
Kirkland Signature Batteries
Costco’s Kirkland Signature batteries have drawn criticism for frequent leakage issues, with some customers reporting damage to their electronics. While they are manufactured by Duracell and offer a competitive price point, their tendency to leak has led many shoppers to seek alternatives.
Despite having a 12-year shelf life, the batteries have been noted for falling just short of name-brand counterparts in longevity. Some customers prefer premium options like Duracell Optimum or Energizer lithium batteries for better reliability.
Food Court Chicken & Bacon Sandwich
Costco’s food court has struggled to impress shoppers with its sandwich offerings, and the latest Chicken & Bacon Sandwich is no exception. Customers have criticized its dry ciabatta bread, high 920-calorie count, and lack of excitement compared to international food court options.
Some believe the sandwich feels uninspired, while others argue that a different bread choice or preparation method could improve its appeal. Despite the mixed reception, Costco continues to experiment with new menu items.
Chomps Beef Sticks
Chomps Beef Sticks, a popular high-protein snack, have recently faced concerns over quality and safety. Some customers have reported finding moldy sticks or experiencing an unusual odor, raising doubts about consistency.
Additionally, Chomps issued a voluntary recall in March 2025 after two consumer complaints revealed the potential presence of metal fragments in certain batches. While no injuries have been reported, shoppers should check packaging and lot codes to ensure their products are unaffected.
