The most common Cockroach Species found in Australia are the Oriental, American, Australian & German.
Because cockroaches eat a wide range of food, including rotting garbage, it is believed that they spread a number of diseases to humans including salmonella and gastroenteritis. Recent studies have indicated cockroaches can also cause allergies. A cockroach infestation can be treated with a combination of good hygiene practices and insecticide.
Full Details About Cockroaches in Australia Below