Costco’s Kirkland Signature brand is often hailed as a hidden gem—affordable, high-quality, and even better than name brands in many cases. But not every Kirkland product is a home run. Some have left customers disappointed, frustrated, or even demanding a refund. Whether it’s quality control issues, off flavors, or just poor performance, these are the Kirkland products that don’t live up to the hype.
Kirkland Diapers
Parents love a good deal, but many have reported that Kirkland diapers fall short compared to other major brands. Complaints range from poor absorbency to frequent leaks and diaper rashes. For something as important as baby care, cutting corners can quickly lead to regret.
Laundry Detergent
While the Kirkland Signature Ultra Clean laundry detergent boasts a low price and bulk size, many customers find that it doesn’t clean as effectively as competitors. Stains often remain, and some users have noted that clothes come out of the wash with a lingering chemical scent rather than feeling fresh.
Coffee
Kirkland Signature coffee varieties, especially the medium roast, have received mixed reviews. Some coffee lovers find the flavor dull, bitter, or overly acidic. If you’re particular about your morning brew, this might be one area where spending a little extra on a more trusted brand pays off.
Trail Mix
Trail mix should be a satisfying, flavorful snack, but Kirkland’s version has been criticized for being too heavy on filler ingredients like raisins and peanuts, with very little of the good stuff—like cashews or M&M’s. Some customers also mention the nuts often taste stale, even when the bag is newly opened.
Shampoo
Kirkland’s shampoo and conditioner set is supposed to rival salon brands, but not everyone is convinced. While some love it, others report dry hair, scalp irritation, or a waxy build-up over time. If you have sensitive skin or color-treated hair, this product may not be worth the risk.
Cheese
Kirkland shredded cheese is a popular pick for bulk buyers, but many users note that it doesn’t melt evenly and can become rubbery instead of gooey. This can be frustrating when you’re making pizzas or casseroles and expecting that classic cheese-pull moment.
Protein Bars
Fitness enthusiasts often turn to Kirkland’s protein bars for a budget-friendly boost, but reviews point to a gritty, chalky texture and an artificial aftertaste that can make them hard to stomach. Even if the macros look good, the taste might leave you reaching for something else.
Toilet Paper
You might think softer is better, but some Costco shoppers argue that Kirkland’s toilet paper is too soft and lacks durability. It can tear easily and leave behind lint, which is more frustrating than it sounds. For many, a balance of softness and strength is key—and this TP misses the mark.
