For U.S.-bound shipments, solid-wood pallets, crates, skids, reels and dunnage should be treated, debarked and correctly marked under ISPM 15 before loading. Importers should verify the packaging type, the treatment mark, the condition of the wood and the evidence package while the cargo is still at origin. A supplier statement or treatment certificate does not correct an absent, illegible or suspicious mark on regulated wood packaging.
This guide gives importers a practical 24-point control plan for wood packaging material (WPM). It is designed for commercial shipments using pallets, crates or blocking materials and should be used together with current destination-country rules, carrier requirements and advice from the responsible customs or plant-health authority.
ISPM 15 is the International Plant Protection Convention standard for reducing the risk that raw-wood packaging spreads quarantine pests through international trade. The standard covers packaging made from raw wood, including pallets, crates, boxes, cases, cable drums, reels, skids and loose dunnage. The official IPPC summary of ISPM 15 explains that processed wood made pest-free through glue, heat or pressure, such as plywood, is outside the standard.
For the United States, USDA APHIS states that regulated WPM entering or transiting the country must be pest-free, debarked, treated and marked. Noncompliant WPM may prevent the shipment from entering. The commodity inside the package can be ordinary industrial or consumer goods; the compliance issue comes from the wood used to carry, protect or secure it.
Do not classify a shipment only from the main pallet deck. A plywood crate can still contain solid-wood battens, runners or blocking. Likewise, compliant pallets do not make unmarked loose timber used at the container door acceptable.
APHIS tells U.S. importers to look for the IPPC symbol, a two-letter country code, a unique producer or treatment-provider number and a treatment code. Common codes include HT for heat treatment and MB for methyl bromide treatment. The mark should be legible and applied to the wood itself, not added as a removable paper label.
For U.S. entries, the country code and producer code should be separated by the required hyphen. APHIS ended its temporary enforcement suspension on December 31, 2025 and resumed enforcement on January 1, 2026. Importers should therefore reject a mark that relies on the old temporary exception. See the APHIS hyphen-requirement reminder.
A mark is not proof that the wood is currently clean. Inspectors also look for live pests and evidence such as exit holes, feeding trails and frass. Treatment reduces phytosanitary risk at the time of treatment; it does not protect wood from later contamination or poor storage.
The WPM review should be part of the broader container loading inspection checklist. That final control also verifies cargo identity, package count, moisture exposure, weight distribution, securing and the seal record.
A folder containing hundreds of unlabelled images is hard to audit. Ask the inspector or supplier to provide a short, structured set:
Match these records to the packing list and shipment documents. DDPexpert's commercial invoice checklist for DDP shipments can help the buyer reconcile product descriptions, quantities and shipment references across the commercial file.
APHIS explains that an agricultural inspector may issue an Emergency Action Notification when WPM fails inspection. Depending on the violation and agency direction, actions may include safeguarding, supervised treatment or destruction, or re-exportation. These options create delay and cost, and the importer should not assume the cargo can simply be separated from the packaging after arrival.
If a problem is found, identify the exact violation, contact the responsible CBP and APHIS officials, notify the overseas supplier, preserve the inspection records and follow only the corrective action authorized by the agencies. For future shipments, trace the affected WPM back to the treatment provider and change the supplier, packaging material or inspection gate as needed. The USDA APHIS importer guidance provides the current U.S. process and official resources.
Processed-wood, plastic, metal and synthetic systems can reduce phytosanitary exposure, but the packaging still has to protect the product and support safe handling. Before switching, evaluate load rating, fork access, stacking, export durability, moisture resistance, recyclability, destination disposal and total landed cost. A weaker alternative that collapses in transit is not a compliance improvement.
Ask freight providers to state whether inspection, rework, storage, disposal, re-export or destination handling costs are included or conditional. DDPexpert's guide to comparing DDP shipping quotes line by line shows how to separate defined charges from contingencies.
No. For regulated WPM, the physical packaging and its official mark are central to the inspection. A certificate can support traceability, but buyers should not use paperwork to excuse missing, illegible or suspicious markings.
Reuse may be possible when the WPM remains compliant and has not been repaired, remanufactured, contaminated or infested. Any replacement boards or repairs should be reviewed under the applicable ISPM 15 rules before reuse.
DDP defines commercial delivery obligations, but it does not cancel import, plant-health or enforcement requirements. The contract should allocate packaging responsibilities clearly, while the importer and its advisers verify that the chosen entry plan is lawful and workable.
Release the shipment only when every regulated wood component is identified, the marks are complete and legible, the wood is clean and pest-free, questionable items have been replaced, and the final loading evidence is traceable to the shipment. Checking at origin is faster and less costly than discovering a packaging violation after arrival.
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