 Trained staff, who work with the venom in its various stages of processing, work extremely carefully with the venom to ensure it is not contaminated.Once the venomous snakes have been milked at the Australian Reptile Park, it is then freeze-dried and sent to Seqiris (formally bioCSL) in Melbourne to be made into antivenom.The process at Seqiris starts with the snake venom being injected into Percheron horses.