Cockroach Treatment Guide

About Cockroaches

There are around 4,500 species of cockroach in the world but the 3 main species of cockroach found in Australia are the German cockroach, the Australian cockroach and the American Cockroach.

get rid of German CockroachesGerman Cockroach 

The German cockroach is mostly found indoors and prefer wet humid conditions,and are usually found in kitchens and bathrooms in homes and businesses. They generally have 3-4 generations a year.

get rid of australian cockroachesAustralian Cockroach

The Australian cockroach is prevalent in areas where the winters are quite mild. They enter buildings at night from gardens.  Nymphs of this cockroach take 6 to 12 months to develop into adults.

get rid of american cockroaches


American Cockroach
The American cockroach is also known as the palmetto bug and is one of the largest pest cockroaches.  Nymphs generally take 6 to 12 months to develop into adults.  These cockroaches are usually found in dark humid places such as roof voids, kitchen and bathroom cupboards and sub floors.

Why are Cockroaches a problem?

Cockroaches can carry a wide range of dangerous diseases including salmonella, staphylococcus and polio.  They can spoil food and have been implicated in the spread of 33 types of bacteria.

Inspecting for Cockroaches

As Cockroaches are nocturnal it is best to inspect at night. Cockroaches generally prefer humid, dark and largely undisturbed areas. When inspecting for Cockroaches focus on areas such as the kitchen, laundry and bathrooms first as these are the areas where conditions suit.

Signs of a cockroach infestation include egg casings, droppings and cockroach sightings during daylight hours, as they usually only scavenge at night when dark. If you see a cockroach during the day  this may indicate overpopulation and the cockroach has been pushed out of their nest.

Pre-Treatment Measures

  • Maintaining a high standard of hygiene, this includes ensuring food scraps and debris such as toaster crumbs and sugar granules are cleaned off benches.

  • Reducing water availability by removing unnecessary containers of water and repairing leaky taps and pipes.

  • Storing food in sealed airtight containers, emptying garbage bins regularly and keeping garbage bin lids tightly closed.

  • Sealing cracks and crevices where possible, for example around pipes in the back of cupboards.

How to Get Rid of Cockroaches

Step 1- Treat Inside

Area 1. Treat Cupboards in Kitchen, Bathroom and Laundry- Apply 1-3 spots of CockyKill Cockroach Gel Bait per m2. Focus on areas where you have seen evidence of cockroach activity including in kitchen cupboard hinges, underneath kettle/toaster, around kitchen bin, in crack and crevices of kitchen cupboards, underneath drawers, dishwasher hinges, around pipes. In the laundry and bathrooms place 1-3 spots of CockyKill Cockroach Gel Bait per m2 in the back corners of the cupboard and in hinges depending on level of infestation. Ensure bait is placed in a way that it will not be touched during use of your kitchen or laundry.

Area 2. Mix Coopex Residual Insecticide or Pyrate Natural Insecticide with Tekko Pro Insect Growth Regulator as a tank mix and apply to skirting boards, walls, cupboards, stoves, pipes and cracks and crevices where cockroaches may harbour. As far as practicable, remove furniture off walls to allow continual application to skirting boards, where not possible attempt to spray behind furniture. Be sure not to spray electrical equipment or power points.

Area 3. Where cracks and crevices are not easily accessible apply Sumiblast Crack and Crevice Residual Aerosol under appliances where cockroaches hide or spray a barrier around inaccessible infested areas. Hold Sumiblast Crack and Crevice Residual Aerosol can upright and spray surface from a distance of 15-20cm for control of cockroaches in these areas for up to 3 months.

Area 4. For Heavy Infestations Following spraying use Big Smoke Insecticide Smoke Generator to fumigate the infested premises. Use 1 Big Smoke generator for every 220m3. 

Fumigation Tips:

  • Leave immediately after lighting smoke generators
  • Thoroughly ventilate treated areas before re-occupying
  • If pest populations are heavy, a second smoke release 2 to 3 days later may be required to reduce the insect population to an acceptable level. 
  • For best results use late in the evening, leaving treated area closed-up overnight

Step 2- Treat Outside

Using Webzone Termiticide and Insecticide apply a perimeter treatment to the property. Apply prepared emulsion to a band of soil or vegetation two to three metres wide around and adjacent to the structure. Also treat foundations of structure to a height of one metre. 


Always read product label prior to use.
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