It’s been a while, but I do recall the bins being opened and sprayed.

This information appears to be current:

“All aircraft entering Australia must be treated with disinsection to prevent biosecurity risks as approved by the Director of Human Biosecurity. The Department of Agriculture, Fisheries and Forestry (the department) administers disinsection requirements on behalf of the Australian Department of Health.The department and the Ministry for Primary Industries (MPI) New Zealand work in partnership to develop and regulate joint aircraft disinsection requirements.”

https://www.agriculture.gov.au/biosecurity-trade/aircraft-vessels-military/aircraft/disinsection#:~:text=On%2Darrival%20%E2%80%93%20is %20an%20in,lasts%20for%20that%20one%20arrival.