Stop Wasting Money: 10 Costco Items You Should Never Put in Your Cart

Costco is known for incredible bulk deals and high-quality products, but not everything in the warehouse is worth adding to your cart. In fact, some items might cost you more in waste, lower quality, or lackluster performance.

Here are 10 specific items at Costco that shoppers often regret buying—and you might want to avoid.

1. Oroweat Organic Bread $9.07/2 Pk

Double-packs of bread often go stale or moldy before you finish both loaves. Unless you’re planning to freeze one right away, it’s easy to waste more than you save with Costco’s bread bundles.

2. Kirkland Signature Bath Tissue $26.01/30 Rolls

Once a fan favorite, this household essential has seen a decline in quality. Frequent complaints mention that the newer version is thinner, more crumbly, and less absorbent compared to alternatives from other brands or stores.

3. Kirkland Signature 100% Pure Vegetable Oil $12.99/2 Ct

While the price seems like a great value, buying vegetable oil in large volumes can backfire. Many households struggle to use it before it goes rancid—especially if not stored correctly in cool, dark places.

4. Kirkland Signature Organic No-Salt Seasoning $9.99/14.5 oz

A massive jar of seasoning may seem ideal for avid cooks, but spices lose potency over time. Unless you’re cooking daily for a large family, you’re likely to end up with stale flavor long before the jar is empty.

5. Kirkland Signature Diapers, Size 1–6 $55.97

Parents once loved the quality of Kirkland diapers, but recent changes in materials and fit have led to increased leaks and lower absorption. Many now prefer switching back to name brands like Pampers or Huggies.

6. Kirkland Signature Ultra Clean Liquid Laundry Detergent $21.50/194 Fl Oz

This budget-friendly detergent works fine for light loads, but several users report that it underperforms on tough stains and doesn’t leave laundry smelling as fresh as other leading brands like Tide or Persil.

7. Kirkland Signature Boneless Skinless Chicken Breasts $31.25

These frozen chicken breasts are convenient, but they’re frequently flagged for “woody breast” texture—a rubbery, chewy bite caused by muscle tissue issues. Many consumers opt for fresher cuts elsewhere to avoid unpleasant surprises.

8. Taylor Farms Organic Baby Spring Mix (1 lb clamshell)

This big tub of greens is tempting for salad lovers, but spoilage often hits before you can finish it. Many Costco shoppers complain about wilted leaves just days after purchase, leading to food waste.

9. Kirkland Signature Whole Milk $8.70

Unless you’re shopping for a big family, this bulk milk pack can be a bad buy. The large containers are tough to store and difficult to finish before the expiration date—especially if you’re not a daily milk drinker.

10. Snapdragon Chicken Pad Thai

This frozen meal may sound convenient, but it’s gained a reputation for its overwhelmingly fishy smell and mushy texture. Many Costco shoppers say it tastes nothing like real pad Thai, and some have even thrown it out after a few bites.

Final Thoughts

Costco is packed with value—but only if you’re buying what you can use. Bigger doesn’t always mean better, and when it comes to some Kirkland and bulk items, you’re better off skipping them entirely.

Being strategic with what goes in your cart ensures you’re saving money for the right reasons, not throwing it away later.