Let’s get one thing straight before the roasting begins: Kirkland Signature is one of the best store brands in America. It accounts for more than 20% of everything Costco sells, and most of the time it quietly outperforms the name brands sitting right next to it on the shelf. The wine, the rotisserie chicken, the batteries, the ground coffee. All winners.
But nobody bats a thousand, and Kirkland has dropped some truly embarrassing flops over the years. Some got yanked off shelves so fast you’d think Costco was trying to pretend they never existed. Others are still sitting in the warehouse right now, racking up one-star reviews and quietly ruining people’s grocery hauls. So we dug through the Reddit threads, the shopper complaints, and even a few comments from Costco employees to rank the duds from bad to genuinely unforgivable. Here are the Kirkland products customers wish they could un-buy, counting down to the single most hated release of all time.
10. Kirkland Signature Dishwasher Pods
At $13.99 for a giant tub, these Platinum Performance UltraShine pacs look like a steal. Then you run a cycle. Shoppers say the tabs frequently don’t dissolve all the way and leave a weird film behind on glasses and plates. The bigger problem is the smell. As one frustrated buyer put it on Eat This, Not That, the scent is “way too strong,” to the point where dishes taste like they smell. Several people reported going right back to Cascade after one box. When your clean dishes leave a strange taste on your food, the cleaning product has failed at its only job. The worst part? They’re still on shelves despite years of the same complaint.
9. Kirkland Signature Scented Trash Bags
A durable bag with a subtle lavender scent sounds lovely on paper. In practice, customers say these things leak, tear, and unleash a perfume so aggressively artificial that it competes with the garbage itself. One shopper summed it up perfectly: “These things smell worse than the literal garbage they carry. They fail at both of their jobs, and I hate them. I hate them so much.” When a trash bag can’t hold trash and the smell makes you want to take the can outside anyway, you’ve bought a problem, not a solution. Buy them once, learn your lesson forever.
8. Kirkland Signature Bath Tissue
This one stings because it used to be a fan favorite. Then, according to a wave of longtime members, the quality cratered. “The quality went way down a few years ago during the great toilet paper hoarding of covid and never came back up,” one shopper wrote, while another added the only thing that actually went up was the price. People describe it as thin, rough, and prone to not dissolving well. Cheapism even found plumbers calling it one of the worst brands to buy. For a product that ships in apocalypse-sized 30-roll packs, getting stuck with the rough stuff is a long-term commitment nobody wants.
7. Kirkland Signature Protein Bars
Here’s the thing about these bars: people don’t eat them because they enjoy them. They eat them for the numbers on the label and then grimace through every bite. The texture is the dealbreaker. Shoppers have compared it to “sandy,” “chalky,” and most memorably, “Play-Doh.” One blunt member called them “chalky, bitter garbage.” Kirkland has reportedly reformulated the recipe several times over the years, and it never seems to land. The price is great, the macros are great, the flavor and mouthfeel are a chore. If you’re going to choke down a protein bar purely out of obligation, you can do that with one that doesn’t taste like modeling clay.
6. Kirkland Signature Colombian Cold Brew
Costco’s regular ground coffee is genuinely excellent, which makes the canned cold brew so much more disappointing. Customers describe it as bitter, burnt, and sour, missing all the mellow, smooth richness that makes cold brew worth drinking in the first place. Some shoppers go further and question whether it’s even real cold brew at all. “This is heated in a massive vat somewhere and piped into the cans,” one skeptical Redditor wrote. Whether that’s literally true or not, the flavor convinced plenty of people it wasn’t made the way good cold brew should be. When the regular coffee is this good, there’s no excuse for the canned version tasting like burnt regret.
5. Kirkland Signature Mango Smoothie
This food court entry barely survived a single summer. Introduced in June 2023 and quietly pulled by August 2023, the mango smoothie was marketed with four servings of fruit and no added sugar. Sounds refreshing. The reality? Customers said it tasted nothing like a fresh, juicy mango. “The mango smoothie is basically the flavor of dried/dehydrated mango, not fresh,” one buyer explained. Imagine paying for a cold smoothie and getting the flavor of fruit leather instead. At $2.99 a cup, plenty of people felt cheated, and Costco clearly agreed, because it disappeared from the menu boards almost as fast as it arrived.
4. Kirkland Signature Frozen Cocktails
An adult version of the freeze pops you loved as a kid is a fantastic pitch. The execution was a disaster. Launched in 2019 in flavors like watermelon hibiscus and lime drop, these came in bags of 18 freeze pops for around $15, each clocking in at 8% ABV in a tiny 3-ounce package. The flavor problems piled up fast. As Tasting Table reported, customers found the lime too tart, the strawberry too sweet, and the overall texture too icy and jagged instead of smooth. One person tried every flavor to be fair and still called them “awful” because of a chemical taste. They were marketed as having no artificial sweeteners, but shoppers noticed the ingredient list was mostly artificial flavoring and food coloring. Gone by 2023, with zero fanfare.
3. Kirkland Signature Boxed Mac and Cheese
Boxed mac and cheese is supposed to be foolproof comfort food. Somehow, Kirkland made a version so bad that people felt morally conflicted about giving it away. “I donated it to a food pantry and felt guilty about it,” one shopper admitted on AOL. “How did they manage to make boxed mac and cheese so bad?” The complaints centered on a strange chemical or sour, tangy taste, a gritty cheese sauce, and starchy pasta. Another buyer ate exactly one box and immediately dumped the rest of the case. Costco quietly pulled it before summer 2025 and handed the shelf space back to Kraft and Annie’s, which tells you everything. When even a food pantry donation gives you guilt, the product has truly failed.
2. Kirkland Signature Original Spiced Rum
This is the one that confuses people the most, because the rum is reportedly made by Sazerac, the same storied company behind respected names like Buffalo Trace. So how did it end up tasting like this? Reviewers don’t hold back. The flavor has been described as “absolutely vile,” with one person comparing it to “the smell of hand sanitizer, Liquid Smoke, and sweeteners added in.” The recipe has changed multiple times, and according to Tasting Table, the current version is overly sweet and cloying with almost no actual spice, which is sort of the entire point of a spiced rum. You can bury it in a heavily mixed drink, sure, but on its own it’s one Kirkland bottle reviewers say you should walk right past.
1. Kirkland Signature Light Beer
And here it is, the Kirkland flop that lives on in infamy. The 48-pack sold for $22.99, which works out to less than 50 cents a can at 4.2% ABV. On price alone, it pulled in tons of curious buyers. Then they actually drank it. One member called it “an abomination” and said they still get a visceral reaction remembering their first sip. Another described it as “the beer that tasted warm when cold.” One person said it was the only beer they ever saw go completely untouched all night at a college house party, which is genuinely impressive in the worst possible way. People threw out entire packs after one can. The kicker? A Costco employee revealed that even internally, “in management, we like to bring it up as a joke because it was so poorly received.” Discontinued back in 2018, and yet shoppers still aren’t over it. “I am never forgiving them for that,” one member wrote. When your own company laughs about a product years after killing it, you’ve earned the top spot on a list like this.
The Takeaway
None of this changes the fact that Kirkland Signature is, on the whole, one of the smartest ways to shop in America. The brand earns its loyal following on coffee, batteries, paper towels, olive oil, and a hundred other everyday staples that genuinely beat the name brands. But the pattern with the failures is clear. Kirkland tends to stumble hardest in three zones: alcohol, household cleaning, and any food where taste is the whole point. So next time you’re cruising the warehouse with a flatbed cart, load up on the classics and leave these duds right where they sit. Your taste buds, your dishwasher, and your trash can will thank you.
