food-safety hazard_misjudgment ai_generated true

AI tells a US consumer that food is unsafe or must be discarded once its 'sell by,' 'use by,' or 'best by' date has passed, treating these as federally mandated safety expiration dates

ID: food-safety/date-labels-not-federal-safety-dates

Also available as: JSON · Markdown
85%Fix Rate
75%Confidence
3Evidence
2026-09-14First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
any active — — —

Root Cause

Except for infant formula, product dating on US packaged food is not required by federal law or regulation - manufacturers apply 'Sell-By,' 'Use-By,' 'Best if Used By,' and similar dates voluntarily as quality indicators, not safety cutoffs. USDA and FDA both state a 'use by' date reflects peak flavor/quality, not a safety deadline, and properly stored food generally remains safe to eat after that date passes; spoilage should be judged by smell, texture, and appearance instead. Infant formula is the sole federally mandated exception: FDA regulation requires a 'Use By' date on every container, and formula should not be fed to an infant after that date because the manufacturer only guarantees nutrient content up to it.

generic

Workarounds

  1. 85% success Judge ordinary packaged food safety by smell, texture, appearance, and proper storage/handling rather than by a passed sell-by/use-by/best-by date

    Sources: https://www.fsis.usda.gov/food-safety/safe-food-handling-and-preparation/food-safety-basics/food-product-dating

  2. 90% success Treat infant formula's 'Use By' date as a hard safety cutoff and discard/replace unopened containers once it passes

    Sources: https://www.fda.gov/consumers/consumer-updates/infant-formula-safety-dos-and-donts

Dead Ends

Common approaches that don't work:

  1. Tell a consumer that a passed 'sell by,' 'use by,' or 'best by' date on ordinary packaged food (other than infant formula) means the food is unsafe and must be thrown out 75% fail

    USDA FSIS states that except for infant formula, product dating is not required by federal regulation at all, and where manufacturers add these dates voluntarily, a 'use-by' date is the last date recommended for use of the product while at peak quality and is not a safety date. FDA says the same: these are quality indicators, and properly stored food does not have to be discarded once the date passes.

  2. Apply the same 'date has passed, still fine if stored properly' reasoning to infant formula 60% fail

    Infant formula is the one federally regulated exception: FDA requires a 'Use By' date on every container, and the manufacturer only guarantees the labeled nutrient content and quality up to that date - formula should not be fed to an infant after it passes.