We applied as a business for a dangerous goods excepmtion for some of our glues and aerosols, absolutely everything we sent to them was classed as dangerous and we were not able to send them using Australia Post. A few years back, we had to stop sending out bon bon (cracker) snaps as they are considered dangerous and Australia Post will not carry them under any circumstances. I still see heaps of people selling them - they obviously flout the regulations or are ignorant of the facts.