Beverages
How long do juice boxes last?
USDA’s answer for juice boxes is the package use-by date in the pantry; once the straw goes in, refrigerate what’s left and finish it inside 8–12 days.
How long does it keep?
| Pantry | Package use-by date |
|---|---|
| Fridge, opened | 8–12 days |
Can it sit out?
Unopened, juice boxes is shelf-stable. Once opened, treat it as perishable — the FSIS 2-hour rule applies.
Perishable food left at room temperature for more than 2 hours should be thrown out — 1 hour if it’s 90°F or hotter (a picnic, a hot car, a summer kitchen).
How to tell if juice boxes has gone bad
- A swollen, drum-tight box
- Juice that foams or fizzes up the straw
- A sharp, fermented smell at the straw hole
When in doubt, throw it out.
Freeze a box the night before a lunchbox goes out — it thaws by noon and keeps the sandwich cold on the way.
Quick answers
How long do juice boxes last?
USDA’s answer for juice boxes is the package use-by date in the pantry; once the straw goes in, refrigerate what’s left and finish it inside 8–12 days.
How long can juice boxes sit out?
Sitting out isn’t the safety question for unopened juice boxes — once opened, the FSIS 2-hour rule applies. Perishable food left at room temperature for more than 2 hours should be thrown out — 1 hour if it’s 90°F or hotter (a picnic, a hot car, a summer kitchen).