Here are some of the most common and dangerous bugs in Sydney, each own has its own unique dangers & others more frequest then others in residential homes.
Many cases you must consider your environment for example, homes with many dogs or chicken pens can expect more mice and fleas.
Then you have swimming pools or ponds that can be mosquito breeding grounds or it could even be a ant infestation, once they find the food source they can invade your whole kitchen systematically every day.
Some of the pests in Australia are much more dangerous especially in your family home where yourself and family could be exposed to venomous red back spiders, sydney funnel web spiders and wasps.
It’s important to due digilence and be aware of your sorrounding as their are many various bugs & pests native and non native to Australia that are living in your property.