Disinfection of Pallets

Disinfection of Pallets

Why Decontamination of Wooden Liners

  • Fumigation of wooden pallets and wooden inserts to limit the spread of insects and harmful organisms between one country and another during international transportation and trade.
  • The wooden inserts are the ideal habitat for termites, sterilization is a method of preventing and destroying termites thoroughly, prolonging the life of the product, avoiding unnecessary losses. .
  • Wooden pallets are often reused items, that is, have been used, the reuse of wooden pallets from wooden materials such as wooden tables, wooden beds to save costs. This means that the origin and safety are not guaranteed. Therefore, it is really necessary to spray and disinfect wooden pallets before putting them into use.

In case we receive fumigation, fumigation of import and export wooden pallets

1 Compulsory case

  • Fumigation of wooden pallets as well as wood products is an international regulation to minimize the spread of insects and harmful organisms between one country and another.
  • Wood products that have not been surface treated or goods derived from wood such as bamboo and rattan, handicrafts.
  • Goods using packaging, wooden shelves, dunnage such as wooden pallets, wooden crates, millet boards, boxes, wooden crates ….
  • So in case you use wooden pallets or wooden dunnage materials, it is imperative that you fumigate and have a certificate they receive to meet ISPM 15 standards for export.
AKNT Fumigation Joint Stock Company we disinfect according to ISPM 15 international standards and customers will be granted a certificate to ensure that they meet export standards.

2 Cases not required

  • Your business is in a place prone to pest infestation. For example, in newly opened industrial parks, especially near wooded areas, wooden materials will be at great risk of termites. It is possible that within 2 to 2 weeks of storage, termites have begun to develop.
  • Goods or infrastructure your business has many materials from wood. In this case, maybe just a few dozen pallets that are not disinfected are also a bait for pests to attack your business’ wooden assets.
  • The company operates in the medical field. The medical field is always a field that places high demands on hygiene and the environment.
  • Therefore, it is also necessary to disinfect to ensure the highest level of environmental hygiene.
  • The business is located in the epidemic area. It is not the insects that transmit the disease. But fumigation of the wood will prevent them from creating a damp, disease-sensitive environment.

Quality of pallets and dunnage

Many pallets, dunnage materials are made from reclaimed wood, poor quality wood, bark and many traces of insects (worm holes) or live insects, which have not been exposed or dried.
Without proper drying measures, the possibility of mold growth is very high. And once mold has arisen, there is absolutely no way to deal with it, including methods of sterilization.
The export of goods by sea takes quite a few days and through areas with different weather (from hot and humid to cold) will lead to the phenomenon of containers “sweat” causing water stagnation inside the container and from there will moisture and mold growth.

Therefore exporters note:

  • Wood used to close pallets or dunnage must be peeled off, without traces of worms, and dried to the appropriate water content.
  • Use a moisture-proof agent of the appropriate type and quantity to ensure that the humidity in the container is maintained at a safe level, even in the event that it arises due to the phenomenon of “sweat” of the container.

Treatment and control of reinfection

Fumigation with Methyl bromide (MB) in the warehouse by covering with canvas or in the sterilization room, in the container is unsatisfactory due to reasons such as insufficient incubation time, not airtight due to uneven warehouse floor, is not clean or the warehouse floor is permeated with vapors or  disinfection room, sterilization container is not airtight.
  • Treatment of WPM – Wood Packaging Material by heat treatment method (HT) has not met the prescribed standards.
  • WPM – Wood Packaging Material after treatment is not strictly controlled, mixed with untreated numbers, leading to the case of using untreated WPM – Wood Packaging Material to close Pallets or as dummies.
  • Pallets have been handled but kept for a long time in the warehouse waiting for export, near the sources of infection, so they are re-infected with insects and mold.
  • Inadequate packing – Use vapor barrier materials to pack goods and include wooden lining materials.

Preventative method :

  • The area for disinfection and palletizing needs to be clean, dry, with a concrete or hot asphalt concrete floor that is impervious to steam, and the surface is smooth and flat. Empty rooms or containers used as sterilization chambers must be airtight
  • In case of disinfection of WPM – Wood Packaging Material and goods in the container before export: Take the preventive measures as in item 1, the container should not be used if there are signs of not being airtight (bottom floor, door) .
  • Ensure the drug incubation time is at least 24 hours as prescribed. The incubation time is calculated from the time when the drug is finished pumping to the time of ventilation for sterilization in the warehouse or to the closing time of the container at the port of liquidation (this is the time when the ventilation holes are removed for ventilation).
  • Do not enclose the pallet or backing material with vapor-proof materials such as PE film, PVC, painted carton and sealed with tape.
  • Areas for sterilization, packing and storage of post-sterilization materials should be isolated from other areas. Do not mix sterilized material with unsterilized portion to minimize the risk of reinfection.
  • WPM – Wood Packaging Material has been processed according to ISPM 15, so it is quickly used for export.

Establishment of RegulationsFumigation of Wooden Liners

– Wood packaging materials are usually made from raw wood that has not been processed or treated to eliminate or eliminate pests and thus this is a route for the introduction and spread of pests. Wood packaging materials are often reused, recycled or remanufactured (packaging materials from an imported shipment can be reused for packaging for other shipments for export).
– It is very difficult to determine the true origin of wood packaging materials, so the phytosanitary status of these materials cannot be confirmed.
– Therefore, this fumigation treatment standard prescribes globally accepted measures that have been approved and can be applied to wood packaging materials for all countries, to eliminate risks for most phytosanitary pests, and significantly reduce the risk from other pests that may be associated with packaging materials.
– ISPM 15(INTERNATIONAL STANDARDS FOR PHYTOSANITARY MEASURES) stipulates phytosanitary measures to reduce the risk of introduction or spread of phytosanitary pests through packing materials. wooden (Wood Packaging Materials) made from coniferous wood or from other raw woods used in international trade.
– The ISPM 15 Fumigation Standard is an internationally specified standard for pallets of pine and many other wooden materials used for dunnage for various purposes.


IPPC – International Plant Protection Convention.
The above regulatory mark certifies that the wooden packaging material bearing the mark has undergone an approved measure.
The minimum mark includes the following items:
– Icon.
– The country code consists of 2 letters followed by a certain number issued to the processing unit by the National Plant Protection Agency – the country.
– Abbreviation IPPC for approved measure (e.g. HT for heat treatment and MB for Methyl Bromide disinfection)
The stamp must:
– According to the law.
– Clear, easy to read.
– Eternal and does not fade.
– Closed in a visible position, at least on opposite sides of the object to be certified.
– Avoid using red or orange as these colors are commonly used for dangerous goods labels.


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