Every year, Australia introduces seasonal biosecurity measures to reduce the risk posed by the Brown Marmorated Stink Bug, commonly known as BMSB.
For importers shipping machinery, metal products, vehicles, industrial equipment and other commercial cargo to Australia, BMSB requirements can affect treatment, inspection, customs clearance and overall shipping time.
The 2026–27 BMSB season has now commenced, with several important changes to Australia’s seasonal measures.
Understanding whether your cargo is affected before shipment can help reduce the risk of delays, additional treatment and unexpected logistics costs.
When Is the 2026–27 Australian BMSB Season?
Australia’s 2026–27 BMSB seasonal measures apply from:
1 September 2026 to 30 April 2027 inclusive.
For sea freight, the Shipped on Board Date shown on the Ocean Bill of Lading is used to determine when the goods were shipped.
Gate-in dates and terminal receival dates are not used as substitutes for the official shipped-on-board date.
For example, a container may enter the terminal on 30 August but not be loaded onto the vessel until 2 September.
In that situation, the 2 September shipped-on-board date is relevant when determining whether seasonal BMSB measures apply.
What Is the Brown Marmorated Stink Bug?
The Brown Marmorated Stink Bug is an invasive agricultural pest that can travel internationally by hiding in cargo, machinery, vehicles and containers.
During cooler months in the Northern Hemisphere, BMSB may seek sheltered locations to overwinter.
This creates a risk that the pest can be transported to Australia inside international cargo.
If established in Australia, invasive pests can create significant risks for agriculture, ecosystems and trade.
Australia therefore applies additional seasonal biosecurity controls to certain goods and countries during the BMSB risk period.
Which Shipments May Be Subject to BMSB Measures?
Several factors are considered when determining whether a shipment is subject to seasonal measures.
These include:
- Shipping date
- Transportation method
- Country of manufacture
- Country of export
- Commodity classification
Generally, BMSB measures may apply when goods are shipped between 1 September and 30 April, arrive as sea cargo, are manufactured in or shipped from a Target Risk Country and fall within a Target High Risk or Target Risk goods category.
The exact requirements should therefore be checked according to the commodity and shipment rather than the country of export alone.
What Are Target High Risk Goods?
Target High Risk Goods are commodity categories considered to have a higher BMSB risk.
When qualifying goods are manufactured in or shipped from Target Risk Countries, mandatory BMSB treatment may apply.
Common categories include:
- Wood and wood products
- Cork products
- Carpets and textile floor coverings
- Stone and cement products
- Ceramics
- Glass products
- Iron and steel
- Metal products
- Tools and hardware
- Machinery and mechanical equipment
- Electrical equipment
- Vehicles and vehicle parts
- Aircraft and parts
- Ships and related equipment
For commercial sea freight to Australia, machinery, metal products, tools and vehicle components are particularly important categories to review before shipment.
Actual BMSB requirements should be determined using the relevant tariff classification and current DAFF requirements.
What Are Target Risk Goods?
Australia also identifies Target Risk Goods.
These goods are generally not subject to the same mandatory treatment requirements as Target High Risk Goods but may be subject to increased onshore intervention and random inspection.
Categories may include certain:
- Mineral products
- Inorganic chemicals
- Organic chemicals
- Chemical products
- Plastics
- Rubber products
- Paper products
- Printed materials
- Nonwovens, ropes and related products
Goods that are not independently classified as Target High Risk or Target Risk may also be affected if they are packed in the same container or consignment with goods that are subject to the seasonal measures.
Does All Cargo from China Require BMSB Treatment?
No.
Not every shipment from China to Australia requires BMSB fumigation or treatment.
Whether treatment or inspection applies depends on factors including:
- Commodity classification
- HS code
- Country of manufacture
- Country of export
- Shipping method
- Shipped-on-board date
- Current DAFF seasonal measures
For the 2026–27 season, China is among the countries subject to heightened BMSB surveillance and emerging-risk measures.
Certain goods shipped from China may therefore be selected for random onshore inspection.
Importers should confirm the requirements for their actual cargo rather than assuming that all Chinese cargo requires treatment or that all Chinese cargo is exempt.
What Has Changed for the 2026–27 BMSB Season?
There are several important changes for the 2026–27 season.
The Rolled Goods Policy has been removed.
In previous seasons, some break bulk cargo affected by vessel rollover and treatment timing issues may have had access to alternative compliance arrangements.
That pathway is no longer available for the 2026–27 season.
The BMSB Safeguarding Arrangements Scheme has also been discontinued as an alternative clearance pathway.
In addition, Ethyl Formate has been introduced as an approved BMSB treatment option for the 2026–27 season.
These changes make early coordination between importers, exporters, freight forwarders and treatment providers increasingly important.
What Is the BMSB 120-Hour Rule?
The 120-hour post-treatment window is an important requirement for certain goods treated before 1 December.
In simple terms, qualifying cargo cannot be treated and then remain unsealed or unshipped indefinitely.
For suitable containerised goods, the cargo may need to be loaded into an appropriate six hard-sided container and sealed within the required timeframe.
For Break Bulk cargo, Flat Rack containers and Open Top containers, the goods may need to be loaded onto the exporting vessel within the required period.
The starting point of the 120-hour period also depends on the treatment method.
For fumigation, timing is linked to the commencement of ventilation.
For heat treatment, timing begins when treatment is completed.
This means treatment bookings need to be coordinated carefully with container loading, terminal cut-offs and actual vessel schedules.
Does the 120-Hour Rule Apply After 1 December?
The rules differ depending on when and where treatment is performed.
The standard 120-hour post-treatment window does not apply in the same way to qualifying goods treated on or after 1 December during the current BMSB season.
It may also not apply where treatment is conducted in a non-target risk country under the relevant conditions.
However, this does not mean that all BMSB requirements disappear after 1 December.
Importers still need to confirm whether the cargo, treatment, documentation and transportation method meet Australian biosecurity requirements.
What BMSB Treatments Are Approved in Australia?
For the 2026–27 season, approved BMSB treatment options include:
- Heat Treatment
- Methyl Bromide Fumigation
- Sulfuryl Fluoride Fumigation
- Ethyl Formate Treatment
The appropriate treatment method depends on the cargo, treatment conditions and regulatory requirements.
Where offshore BMSB treatment is conducted in a Target Risk Country, the treatment provider must meet the relevant Australian registration and approval requirements.
Treatment documentation from an unapproved or unacceptable provider may not be recognised.
This can result in further treatment requirements or, for some cargo types, export directions.
How Is BMSB Managed for FCL Containers?
Containerised cargo that is subject to mandatory BMSB treatment may, depending on the applicable conditions, be treated offshore or directed for approved onshore treatment in Australia.
Where onshore treatment is required, cargo generally cannot be deconsolidated or removed from the container before the BMSB risk has been managed.
Onshore treatment capacity may also be limited during busy periods.
This can result in longer clearance times, storage costs and container-related charges.
Where possible and appropriate, planning compliant offshore treatment before departure may help reduce destination delays.
Does BMSB Apply to LCL Sea Freight?
BMSB measures can also affect LCL and FAK containers.
Where an LCL or FAK container contains Target High Risk Goods, BMSB risk may be managed at the container level before deconsolidation.
After the BMSB requirement has been satisfied, individual consignments can continue through other applicable import and biosecurity processes.
This means cargo belonging to different importers within the same consolidated container may sometimes be affected by the BMSB status of the container.
For machinery, metal goods, hardware and other potentially high-risk products, requirements should be checked before LCL booking.
Why Are Break Bulk, Flat Rack and Open Top Cargo More Sensitive?
Break Bulk cargo, Flat Rack containers and Open Top containers cannot always be managed in the same way as sealed standard containers.
Where mandatory BMSB treatment applies, these cargo types may require compliant offshore treatment before shipment.
The consequences of non-compliance can also be more serious because onshore retreatment may not always be available.
The removal of the Rolled Goods Policy for the 2026–27 season makes vessel scheduling particularly important.
If treated cargo misses the required shipping window because of vessel rollover or schedule changes, there may be fewer alternative compliance options.
This is especially relevant for:
- Large machinery
- Vehicles
- Construction equipment
- Project cargo
- Oversized equipment
- Cargo that cannot fit inside a standard sealed container
Treatment and vessel schedules should therefore be coordinated as early as possible.
What Happens If Cargo Does Not Meet BMSB Requirements?
Depending on the cargo type and circumstances, non-compliance may result in:
- Customs and biosecurity delays
- Additional inspection
- Onshore treatment where permitted
- Refusal of discharge
- Export directions
- Storage charges
- Container detention or demurrage
- Additional transportation costs
For certain Break Bulk cargo, non-compliance may result in an export direction rather than simply allowing the cargo to be treated after arrival.
Checking BMSB requirements before shipment can therefore help reduce significant supply-chain disruption.
Can New Goods Be Exempt from BMSB Treatment?
Certain qualifying goods may be eligible for specific exemptions.
One example is the:
New, Unused and Not Field Tested — NUFT
pathway.
Depending on tariff classification and other requirements, certain goods that are newly manufactured, unused and not field tested may qualify where the required manufacturer declaration and supporting conditions are met.
Eligible goods may include certain machinery, tools, electrical equipment, vehicles and related products.
However, simply being “brand new” does not automatically make a shipment exempt.
Manufacturing date, tariff classification and documentary evidence may all be relevant.
Refurbished goods generally do not qualify as NUFT goods.
What Information Should Be Checked Before Shipping to Australia During BMSB Season?
Before booking sea freight to Australia during the BMSB season, useful information includes:
- Cargo description
- HS Code
- Material
- New or used condition
- Country of manufacture
- Country of export
- Shipping method
- FCL, LCL or Break Bulk
- Expected shipped-on-board date
- Australian destination
These details can help determine whether the shipment is affected by seasonal BMSB measures and whether treatment may be required.
Where treatment is necessary, treatment timing should also be coordinated with the actual vessel schedule, particularly where the 120-hour requirement applies.
Why Should BMSB Requirements Be Checked Before Booking?
BMSB compliance is not simply an additional fumigation step.
It can affect the entire sea freight schedule.
The process may involve:
- Confirming commodity classification
- Selecting an approved treatment provider
- Completing BMSB treatment
- Obtaining treatment documentation
- Loading and sealing the container
- Export customs clearance
- Terminal delivery
- Meeting the required vessel schedule
If treatment requirements are only discovered shortly before cargo cut-off, there may not be enough time to complete the process correctly.
Schedule changes or vessel rollover after treatment can create additional problems, particularly for Break Bulk and project cargo under the updated 2026–27 rules.
Ship from China to Australia with Chinz Logistics
Chinz Logistics provides international freight services from China to Australia, including:
- China to Australia sea freight
- China to Australia air freight
- LCL shipping
- FCL shipping
- Furniture and oversized cargo
- Machinery transportation
- China warehousing
- Export customs support
- Australian import clearance
- Cargo consolidation and packing
- Local delivery in Australia
During the BMSB season, shipping requirements can be reviewed according to cargo description, tariff classification, material, transportation method, shipping date and Australian destination.
If you are preparing sea freight from China to Australia, provide:
Cargo description + HS Code + quantity + weight + packed dimensions + material + Australian suburb + postcode
to help determine a suitable shipping and customs solution.
