How to Get Rid of Cockroaches in Australia

Having cockroaches around the house is very unhygienic and unpleasant.

Have you been trying to work out how to get rid of cockroaches in your home?

While many methods exist getting to the bottom of how to get rid of cockroaches can be difficult.

This guide will explain how to get rid of cockroaches in no time.

What is the best way to get rid of cockroaches?

cockroach | Pest control

The best way to get rid of cockroaches is by using Roachkill.

This popular pest control product contains Imidacloprid, a highly effective insecticide used in many professional pest control products. It attracts and then kills cockroaches fast and effectively.

Roachkill remains moist and attractive to cockroaches for up to 3 months.

Look for places of high cockroach activity to place the bait (near sinks, cupboards, and where pipes enter the house are all common spots).

Also great: Advion roach gel

Advion Roach Gel has been HACCP certified, making it suitable for use in food handling areas. This makes it suitable for kitchens and bathrooms.

It’s one of the best cockroach gels on the market, and it will work on most types of Australian cockroaches, including German, American, Brownbanded, Australian and Oriental cockroaches.

You can use Advion both indoors and outdoors.

Best for outdoors: Bifenthrin

Bifenthrin is a synthetic chemical compound available in powder or liquid form.

It’s used for both household and agricultural purposes to control pests such as ants, fleas, ticks, and roaches.

Bifenthrin kills bugs by disrupting the function of their nervous systems, causing them to die in one to three days after exposure.

You can find bifenthrin at many local hardware stores or online retailers.

You’ll also need a backpack sprayer to apply the solution.

Mix the bifenthrin into your sprayer with water according to packaged instructions and be sure to follow all recommended safety measures.

Natural methods for getting rid of cockroaches

In general, home remedies won’t be able to take care of an infestation.

However, if you only see the odd one or two from time to time, here are some natural methods for removal:

Boric acid powder 

Boric acid powder is an effective and safe treatment for cockroaches.

Boric acid is a natural pesticide that kills roaches by dehydrating them.

To make this mixture, combine equal parts of boric acid and flour and place in places where you’ve observed cockroach activity.

The flour will attract the cockroaches, while the boric acid will kill them on contact.

Boric acid can also be used in other ways: sprinkle it behind your fridge to prevent roaches from hiding there.

Diatomaceous earth (DE)

Diatomaceous earth (DE) is a silica-based substance that can be used to safely eliminate cockroaches from your home.

It’s a natural substance, and it won’t hurt pets or kids if they happen upon it.

The small particles of DE are abrasive, so when cockroaches walk through them, the fine powder scratches their exoskeletons and dries them out.

To get rid of cockroaches with diatomaceous earth:

  • Lightly dust areas where you think cockroaches might be active with diatomaceous earth, such as in cabinets and under appliances. Anywhere they might travel is a good place to use it.
  • Leave the DE undisturbed for two days to allow the roaches to come into contact with it. After two days, wipe up the loose powder with a damp cloth before vacuuming up any remaining residue.
  • Repeat every few months or as needed to keep the roach population down!

Empty tub of greek yoghurt

Place an empty (but not clean) greek yogurt container on your kitchen countertop or table.

Leave it out overnight.

By morning, you should see dead cockroaches in your yogurt tub.

Why do you have cockroaches in your house?

First, it’s important to remember that cockroaches are like any other living creature — they are looking for food, water and shelter.

The kitchen area of your house is a prime target for roaches. It offers them easy access to everything they need.

They can also feed on the grease that builds up around stovetops, as well as sink drains and garbage areas.

Types of cockroaches in Australia

Here’s what you need to know about the different kinds of roaches in Australia.

German cockroach: These little guys are brown with two black stripes on their backs. They’re the most common type of cockroach found in Australian households.

American cockroach: The largest variety of roach that calls Australia home, these insects can be as big as 5 cm long. They’re reddish-brown and have a yellow band behind their heads. Where there’s one American cockroach, there’s probably more hiding nearby—they live in large colonies, and they like to hang out where it’s warm and humid (think bathrooms).

Australian cockroach: This species is reddish-brown with a yellow pattern on its back. This kind of roach likes to stay outside but will come indoors if conditions are dry or there aren’t enough food sources outside for them to survive.

Oriental cockroach: These creatures are dark brown or black with a shiny shell. Because they can’t fly, they move slowly—and they like to hang out where it’s cooler than average temperatures at around 20-22 degrees Celsius, making them hardier against extreme heat than some other species of roach in Australia.

Brown Banded cockroach: Smaller than many other varieties at only 11 mm long, this insect is light brown with darker bands across its body (hence the name). It doesn’t need a lot of moisture to survive and tends to prefer warmer areas in your house where humidity is low—like under washing machines or fridges.

Other methods for getting rid of cockroaches

Dish soap and water

  • Mix dish soap and water: You’ll be making a bug repellant that can kill cockroaches if you spray it directly on them.
  • Spray the repellant: Cockroaches breathe through their skin, so covering them with a toxic film will suffocate them.

Baking soda, sugar or honey

  • Mix 1 part baking soda with 1 part sugar or honey. Roaches are attracted to the sweetness.
  • Leave the mixture in areas where you’ve previously seen cockroaches, such as under sinks, behind refrigerators and stoves, and in damp corners of your house.

This method works by using baking soda’s dehydrating properties (the same ones that make it an excellent deodorizer).


Borax is one of the most effective ways to get rid of cockroaches.

Note that Borax is not the same as boric acid, although they are closely related.

You can make your own homemade roach killer using Borax and a few simple ingredients:

  • 1/2 cup of granulated sugar (white or brown)
  • 1/2 cup of Borax

Roach bomb

Also known as foggers, roach bombs are not the best method for dealing with most cockroach problems.

While they can kill the roaches they encounter on contact, they often make the problem worse by pushing them further into safer hiding places.

Michael F. Potter at the University of Kentucky College of Agriculture says that “while foggers require little effort to use, they seldom resolve, and can exacerbate, indoor pest problems.”


The most extreme measure you can take is to hire a professional exterminator.

This is the most effective, surefire way to get rid of cockroaches—but it’s also the most expensive.

An exterminator will come in and determine where the cockroaches are hiding before removing them with pesticides or other chemicals.

It can cost anywhere from a few hundred dollars to thousands of dollars.

Bunnings cockroach killers

If you want to take action ASAP, the good news is that you can easily buy cockroach killers at your local Bunnings.

Here are the cockroach killer products that Bunnings currently sells:

  • Pest Xpert Cockroach Bair
  • Yates Cockroach Gel Bait
  • Raid Max Insect Cockroach Bairs
  • The Buzz Roach Max Cockroach Traps
  • Yates Home Pest Ant & Cockroach Destroyer
  • Raid Exterminator Flea And Cockroach Bomb
  • Hovex Ant Spider Cockroach Barrier Spray
  • Richgro Cockroach Killa Gel
  • Richgro Ant Spider And Cockroach Killer

How to prevent cockroaches

Hopefully, this article has helped you in your goal of expelling cockroaches from your home.

However, to ensure that they don’t return in the future, we recommend that you do the following:

  • Clean up after yourself. The cockroach is a nocturnal scavenger and it feeds on scraps and leftovers forgotten by humans. Keeping things tidy will help to keep them out of your living space.
  • Don’t leave food or water out for them. Cockroaches can live for weeks without eating, but they still need water. If you don’t want these pests returning, make sure there’s nothing for them to eat or drink.
  • Keep your house dry. Cockroaches love moisture and damp conditions, so if you have any leaky pipes or appliances, fix them as soon as possible. A dry house is much less hospitable to these pests.


What season do cockroaches appear in Australia?

Cockroaches are a year-round pest in Australia. In Queensland, they are most active from September through to June, while in NSW they are worse in the summer months.

Photo of author

Steve Kropp

Based in Melbourne, Steve's passion is vegetable gardening, and he’s been writing about it for almost 5 years. He also loves all things DIY and is always looking for a new project. When not working on his own garden projects or blogging, Steve enjoys spending time with his family, cooking meals with produce harvested from his garden, and coaching his son’s footy team.


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