The Costco products that get the most complaints

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Costco shoppers have not refrained from sharing their honest views on products from the superstore's trademark brand, Kirkland Signature. 

One of the most popular retailers in the United States, Costco is known for offering customers the biggest bang for their buck.

The company has over 630 warehouses nationwide as of March 2026, and continues to grow as big-box stores like Target struggle to keep up. 

Costco memberships start at $65, with members getting access to the store's iconic food court and a variety of household essentials from wine to tires. While the annual fee may seem steep, it can easily be recouped with Costco's bulk pricing on food staples. 

Some products are so cheap that shoppers insist they justify the rising cost of memberships, and others say that access to the quality of Kirkland brand products makes the fee more than worth it.  

But not every Costco product is a fan-favorite - here are the Kirkland Signature items that customers suggest you skip.

Costco members say the Kirkland Signature Pepperoni Pizza falls flat for a frozen pie, even compared to DiGiorno or Red Baron

Kirkland Signature Pepperoni Pizza 

It's hard to mess up a pizza, but some Costco shoppers claim the Kirkland Signature Pepperoni Pizza misses the mark. This is a frozen dish similar to DiGiorno or Red Barron. One Reddit user said they 'definitely taste cheap,' but that's expected for a frozen food. 

'I didn't like it,' another Reddit user said. 'There didn't seem to be flavor anywhere, especially the pepperoni.' 

Kirkland Signature Reduced Sodium Dry Salame falls short for shoppers despite its 'healthier' label.

Kirkland Signature Reduced Sodium Dry Salame

Sure it's a 'healthier' option in a convenient resealable container, but this salami option is among the lowest rated on Costco's website. 

The 'Italian-style' meats are pre-sliced and milk-free, but one disgruntled member described it as 'very tough to chew with a wax jerky texture and not a lot of flavor'.

Some Costco shoppers say Kirkland Signature chicken breast chunks are overly salty or even 'rubbery.'

Kirkland Signature Lightly Breaded Chicken Breast Chunks

For a protein-packed option, Costco offers their pre-cooked Kirkland Signature chicken breast chunks. There are 16 grams of protein and no antibiotics, but some customers couldn't get over the 'salty' flavor of the chicken chunks.

'Is it just me or is anyone else getting more and more weird chunks, rubbery and tough...' one Reddit user wrote, 'the last two bags I've had have been pretty off-putting.'

With a weird 'uncooked' color, Costco shoppers don't recommend the Kirkland mild sausage.

Kirkland Signature Mild Italian Sausage

For a product that should be snappy and juicy, the Kirkland Signature's mild sausage was a miss for some customers. One shopper said the sausage felt 'too mild,' missing flavoring or seasoning in general. For others, the sausage felt too salty.  

'Weird consistency, too salty, not enough flavor, and when fully cooked have a weird 'uncooked' pink coloration,' one review said. 'Never getting these again.'

Some Costco members described the Kirkland protein bars as tasting 'chemically.'

Kirkland Signature Protein Bar

It's definitely a good source of protein - one bar clocks in at 21 grams for 190 just calories. Customers deducted a few points for the taste and texture, though, which were described as 'chemically and slightly bitter.'

For five more dollars (and five more bars per box), Costco has Pure Protein Bars available for purchase. 

Kirkland's version of Greek feta wasn't 'authentic' to some Costco shoppers.

Kirkland Signature Organic Greek Feta

In Tasting Table's ranking of Costco-branded cheeses, the Organic Greek Feta landed near the end, described as tasting 'different' than a typical feta. 

Outside of Costco, the white cheese is known for its salty flavor and crumbly texture, made with either sheep, goat, and/or cow's milk. This Kirkland version is a product of Greece and gets points for being organic, but it just isn't as 'authentic' as some customers hoped.

'This cheese is not for savoring or eating alone,' one review said. 'It is barely edible, very low quality feta. But you could use it as ingredient in a dish where you want feta and are not concerned about the taste, texture, or mouthfeel that it leaves. Will not be purchasing again.'  

Kirkland's organic ravioli had some issues with quality control, with one customer's product missing its filling.

Kirkland Signature Organic Spinach & Cheese Ravioli

They're quick and easy, but that isn't always a good thing. Kirkland Signature Organic Spinach & Cheese Ravioli come with about 12 servings per package and are ready in a speedy four minutes. 

However, some customers complained about the quality control for this pasta dish. One shopper claims that six ravioli were 'completely empty,' missing the spinach and cheese filling. 

Not every Kirkland product has to be a winner, though. A big perk of Costco is their 'satisfaction guaranteed' statement on their website, which encourages members to get refunded for lackluster Kirkland products.