For those preparing for the BSMB Season, fumigation is one of the approved methods to ensure that imported goods meet biosecurity regulations.
However, the Department of Agriculture has recently announced additional requirements that must be met before incoming cargo will be officially regarded as properly treated for invasive stink bugs.
These new requirements are intended to be closer in line to the actual process of fumigation with either methyl bromide or sulfuryl fluoride.
1. Start time concentration readings.
If you are using an approved third party fumigation treatment that does not utilise sulfuryl flouride, then please ensure that concentration readings at start time are above or equal to the prescribed treatment dose of 24g/m3.
2. No topping up.
Treatments where additional gas is used to top up at the end of the exposure period is no longer permitted. Proper fumigation requires that gas remain highly concentrated up to a specific endpoint reading of 12 g/m3 throughout the whole duration of the process. Any action that will cause this reading to drop below that will render the process a failure.
These two updates will be effective on December 6. And along with them, please remember that the prescribed doses for fumigation must also be at a temperature of at least 10°C and no dose increases are permitted to compensate for lower temperature as well.
And leastly, please remember that heat treatments are still an approved alternative to fumigation.
Importers and their partner organisations are highly advised to take note and review their BSMB treatment plans to ensure compliance.