It is illegal to light fires on peat anywhere in Tasmania. For all the above reasons fuel stoves are safer and better than campfires. Above all make absolutely sure the fire is out before you leave. Put it out with water, not soil. They are thought to be due to walkers leaving faecal waste exposed and poor personal hygiene.
Flies land on the waste and spread disease.
The waste can also pollute water supplies. Close toilet lids after use. In areas without toilets, bury waste 100 metres away from camps and water sources. Keep food away from flies and places they land on, such as hut tables, furniture etc. Wash your hands or use a disinfectant gel after going to the toilet.