Oriental Cockroach

Species category: Cockroach
Scientific name: Blatta orientalis
Family: Blatidae

This large cockroach species typically reaches 26-32mm in length during adulthood. It has a shiny deep red – to brownish-black colouring. Males and females look different because of their wing appearance, which is larger on the males.

Originating from North Africa, the Oriental cockroach is now found throughout the world but less so in Europe.

It prefers humid, dark and concealed harbourages, such as cellars, ducting and other underground parts of buildings. Deceptively, the harbourage may be located outside an infested area, being reached by the cockroach through under-floor cavities, ducting or drains.

It is most commonly found around the ground-floor of buildings, although sometimes it can be discovered on higher levels.

It is known for its love of water and in a building, can be located in sewers, drains, basements, cellars, under sinks, baths or washing machines.

Like the German cockroach, the main period of activity is early in the evening but unlike this species it is not a similarly accomplished climber, which means it is more commonly located at ground level.

The female lays her eggs in capsules called ootheca, the life cycle can be lengthy with the nymph stage lasting from 6-12 months.

This species will feed on any type of decaying organic matter, including garbage, carrying the bacteria with them on every surface that they traverse.

In the course of their foraging activity, the nymphs, larvae and adults can contaminate and infect foodstuffs. They secrete an odorous discharge from their body which also taints and contaminates food.

Like other cockroach species, the Oriental Cockroaches transmit bacteria as they walk, transferring pathogens such as salmonella and e.coli to every area they scurry across.

Cockroaches also shed cuticles, faeces and other cockroach debris which are known asthma and allergy triggers.

Bayer recommends its Maxforce Cockroach Gels: Maxforce ActivMaxforce Fusion and Maxforce Gold.

Recommended products

Maxforce Fusion Gel-Bait

Maxforce Fusion AU & NZ

Ready to use Bait

Maxforce Fusion is the next generation gel against...

See product
Ficam-is-a-water-dispersible-powder-residual-insecticide Insecticide

Ficam W AU & NZ

Wettable Powder

A residual broad spectrum spray for control of a wide range...

See product
Cislin-25-Bayer-Professional-Insecticide-kills-general-insect-pests Insecticide

Cislin25 1L AU & NZ

Suspension Concentrate

Cislin 25 Professional Insecticide is a premium quality...

See product
a-residual-insecticide-with-fast-knockdown-Crackdown-by-Bayer Insecticide

Crackdown Residual Insecticide AU

Suspension Concentrate

The fast-acting, all-round insecticide for general insect...

See product
Maxforce Gold Cockroach Gel from Bayer Gel-Bait

Maxforce Gold AU & NZ

Ready to use Bait

Maxforce Gold Cockroach Gel is a fipronil-based gel; giving...

See product
temprid75 general insecticide Insecticide

Temprid75 1L AU & NZ

Suspension Concentrate

Temprid75 is a general insecticide that will control most...

See product
tempo insecticide Insecticide

Tempo 1L AU & NZ

Suspension Concentrate

Tempo is a fast-acting, knock-down, broad-spectrum...

See product
Maxforce Activ Cockroach Gel Gel-Bait

Maxforce Activ Cockroach Gel AU

Ready to use Bait

Maxforce Activ is the latest gel, in the line of 'new...

See product
general insect control around farm buildings and houses Insecticide

Coopex Residual Insecticide AU

Wettable Powder

A water dispersible powder that creates a residual surface...

See product
coopex-dust-kills-general-insect-pests Insecticide

Coopex Dusting Powder AU

Dustable Powder

Coopex Dust is a ready-to-use broad spectrum insecticide...

See product

Other Problems


Silverfish are nocturnal and secretive insects that are...

Read more
American Cockroach - Bayer Pest Control

American Cockroach

Gregarious and nocturnal, they spend the day hiding in...

Read more
australian cockroach - environmental science - australia

Australian Cockroach

The Australian cockroach (Periplaneta australasiae) is a...

Read more
German Cockroach - Bayer Pest Control

German Cockroach

German cockroaches are faster and smaller than other...

Read more