Costco scored 62/100 across 111 products
53% of Costco products scored 70 or above (clean), while 28% scored below 40 (avoid). 32% of products contain seed oils.
| # | Product | Brand | Score |
|---|---|---|---|
| 1 | Almond Butter | Kirkland Signature | 100/100 |
| 2 | Organic Salsa (Medium) | Kirkland | 100/100 |
| 3 | Organic Tomato Paste | Kirkland Signature | 100/100 |
| 4 | All-purpose Flour | Kirkland Signature | 100/100 |
| 5 | APPLE MANGO YELLOW CARROT PEACH FRUIT & VEGETABLE POUCHES, APPLE MANGO YELLOW CARROT PEACH | Costco Companies Inc. | 100/100 |
| # | Product | Brand | Score | Flagged |
|---|---|---|---|---|
| 1 | Trail Mix Snack Packs | Kirkland,Kirkland Signature,M&M's | 0/100 | e102 e110 e129 |
| 2 | Trail Mix | Kirkland | 0/100 | e102 e110 e129 |
| 3 | Trail Mix | Kirkland | 1/100 | e102 e110 e129 |
| 4 | Kirkland Signature Dipped & Chewy Granola Bar Caramel | Kirkland Signature | 7/100 | e322 e322i e392 |
| 5 | VALENCIA PEANUT BUTTER FILLED PRETZEL NUGGETS PRETZELS, PEANUT BUTTER | Costco Companies Inc. | 10/100 | e471 e500 e500ii |
| Store | Grade | Avg Score |
|---|---|---|
| Costco | C | 62/100 |
| Trader Joe's | A | 99/100 |
| Whole Foods | A | 79/100 |
| Kroger | C | 64/100 |
| Target | C | 62/100 |
| Sam's Club | C | 60/100 |
| ALDI | C | 57/100 |
| Walmart | C | 55/100 |
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CheckIt AI. (2026). "Costco Ingredient Safety Report Card: C | CheckIt AI". Climaverse PBC. Retrieved from https://getcheck.it/store-grades/costco"Costco Ingredient Safety Report Card: C | CheckIt AI." CheckIt AI, Climaverse PBC, 2026-03-05. https://getcheck.it/store-grades/costco.<a href="https://getcheck.it/store-grades/costco">Costco Ingredient Safety Report Card: C | CheckIt AI — CheckIt AI</a>@misc{checkit2026storegradescostco,
title = {Costco Ingredient Safety Report Card: C | CheckIt AI},
author = {CheckIt AI},
year = {2026},
publisher = {Climaverse PBC},
url = {https://getcheck.it/store-grades/costco},
note = {Retrieved 2026-03-05}
}