Costco Ingredient Safety Report Card: Grade C+

C+ — 61/100

Costco scored 61/100 based on 344 products analyzed by CheckIt AI.

Key Statistics

Products Analyzed344
Average Score61/100
% with Seed Oils31%
% with Flagged Additives44%
% with Allergens55%
% Failed Safety31%

Lowest-Scoring Products at Costco

ProductBrandScoreIssues
Trail Mix Snack PacksKirkland,Kirkland Signature,M&M's0/100Seed oils: corn starch, corn syrup, raisins coated in non hydrogenated sunflower oil, almonds roasted in canola oil and peanut oil and salt; Additives: e102, e110, e129, e132, e133, e1400, e322, e322i, e414
Trail MixKirkland0/100Seed oils: corn starch, raisins coated in non hydrogenated sunflower oil, almonds roasted in canola oil and peanut oil and salt, corn syrup; Additives: e102, e110, e129, e132, e133, e1400, e322, e322i, e414
Trail MixKirkland1/100Seed oils: non hydrogenated sunflower oil, sunflower oil, canola oil, rapeseed oil, corn starch, corn syrup, palm oil, palm oil and fat; Additives: e102, e110, e129, e132, e133, e1400, e322, e322i, e414, e903
Kirkland Signature Dipped & Chewy Granola Bar CaramelKirkland Signature7/100Seed oils: canola; Additives: e322, e322i, e392, e422, e440, e471, e500, e500ii
Enjambres de S'mores con CarameloKirkland Signature7/100Seed oils: cornmeal, corn, canola oil, rapeseed oil; Additives: e322, e322i, e339, e339iii, e392, e407, e422, e500, e500ii
Mini Muffin Bites Chocolate ChipKirkland Signature7/100Seed oils: canola oil, rapeseed oil; Additives: e202, e322, e322i, e341, e341i, e412, e414, e415, e422, e450, e450i, e466, e500, e500ii
Peanut Butter PretzelsKirkland Signature10/100Seed oils: canola oil, rapeseed oil, corn syrup; Additives: e471, e500, e500ii, e503, e503ii
Smoked salmonKirkland10/100—
Seasoned rotisserie chickenKirkland12/100Additives: e1400, e407
SUPREME PEPPERONI, SAUSAGE, ROASTED VEGETABLES, 3-CHEESE BLEND ON CAULIFLOWER CRUST PIZZA, SUPREMECostco Companies Inc.13/100Additives: e160c, e250, e270, e330, e415
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📋 Cite This Data
APACheckIt AI. (2026). "Costco Report Card: Grade C+ — Ingredient Safety Analysis | CheckIt AI". Climaverse PBC. Retrieved from https://getcheck.it/store-report/costco
MLA"Costco Report Card: Grade C+ — Ingredient Safety Analysis | CheckIt AI." CheckIt AI, Climaverse PBC, 2026-04-18. https://getcheck.it/store-report/costco.
HTML Embed<a href="https://getcheck.it/store-report/costco">Costco Report Card: Grade C+ — Ingredient Safety Analysis | CheckIt AI — CheckIt AI</a>
BibTeX@misc{checkit2026storereportcostco, title = {Costco Report Card: Grade C+ — Ingredient Safety Analysis | CheckIt AI}, author = {CheckIt AI}, year = {2026}, publisher = {Climaverse PBC}, url = {https://getcheck.it/store-report/costco}, note = {Retrieved 2026-04-18} }