Reusing packaging can save time and costs, but it comes with risks if old hazardous material labels aren't removed. When boxes with visible dangerous goods labels are reused, carriers like FedEx must automatically treat them as hazardous, regardless of the actual contents.
Why does this matter?
Shipping carriers are required by law and safety protocols to handle and process any package that appears to contain dangerous goods according to strict regulations. This means:
- ✓Extra paperwork and inspections
- ✓Delays in shipping
- ✓Potential return or disposal of the shipment
- ✓Safety concerns for you and others
This situation can happen accidentally if old labels are left on reused containers, even when you're packing non-hazardous everyday products.
👉 In short: Visible labels override actual contents in the shipping process.
How to Prevent It
Follow these simple steps every time you reuse a box:
| 1. Before Packing |
Inspect all sides of the box — top, bottom, and corners. |
| 2. Remove or Cover |
Completely remove old hazard labels, or fully cover them with opaque tape or blank labels. Labels must not be visible at all. |
| 3. Final Check |
Ensure only current and correct shipping labels remain — no conflicting or misleading markings. |
💡 Simple routine checks make a big difference in safety and efficiency.
Common Dangerous Goods Labels to Look Out For
When inspecting reused packaging, watch for these common labels or markings. All must be removed or fully obscured if using the box for non-hazardous shipments.
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UN Number Label
Four-digit number identifying dangerous goods (e.g. UN 3480 for lithium batteries).
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LQ (Limited Quantity)
Black-and-white diamond, may have "LQ." Used for limited quantities of hazardous goods.
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Flammable
Flame symbol, usually red. Indicates flammable liquids, solids, or gases.
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Corrosive
Test tube and burns symbol. For acids or alkalis.
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Lithium Battery
Battery icon, sometimes on fire. Often reads UN 3480 / 3481.
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Toxic
Skull and crossbones. For poisonous materials.
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Explosive
Exploding bomb symbol. For substances at risk of exploding.
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Environmentally Hazardous
Dead tree and fish. Means dangerous to the environment.
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Oxidizer
Flame over circle, yellow. For substances that can cause combustion.
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Before you ship, always check for and remove or cover any old hazardous goods labels.
Stay safe, ship smart.
