cockroach pest control

Key Facts Cockroaches

Cockroaches are distinguished by their very long whip-like antennae, flat oval bodies and rapid, jerky walk.

There are two main species of cockroach in Britain, Oriental and German Cockroaches.

The German Cockroach carries its egg case until the 30 or more nymphs are ready to hatch.

They grow in stages, from nymphs to maturity in 6 to 12 months for the Oriental Cockroach, and 6 to 12 weeks for the German Cockroach

German Cockroach Informations

Cockroaches (otherwise known as ‘roaches’) are common insects, with around 4,600 species worldwide. About 30 cockroach species are associated with human habitats and five of those are well known as pests.

Two of the most common types of cockroach pest in the UK are the Oriental cockroach (Blatta orientalis) and the German cockroach (Blattella germanica)


The German Cockroach

Blattella germanica is a species of small cockroach, typically about 1.1 to 1.6 cm (0.43 to 0.63 in) long. In color it varies from tan to almost black, and it has two dark, roughly parallel, streaks on the pronotum running anteroposteriorly from behind the head to the base of the wings. Although B. germanica has wings, it can barely fly, although it may glide when disturbed. Of the few species of cockroach that are domestic pests, it probably is the most widely troublesome example. It is very closely related to the Asian cockroach, and to the casual observer, the two appear nearly identical and may be mistaken for each other. However, the Asian cockroach is attracted to light and can fly like a moth, while the German cockroach cannot.

The Oriental cockroach

Blatta orientalis, also known as the waterbug (as they live in damp areas) or black beetle (as their bodies are mostly dark), is a large species of cockroach, adult males being 18–29 mm (0.71–1.14 in) and adult females being 20–27 mm (0.79–1.06 in). It is dark brown or black in color and has a glossy body. The female has a somewhat different appearance from the male, appearing to be wingless at a casual glance, but is brachypterous, having non-functional wings just below her head. She has a wider body than the male. The male has long wings, which cover three quarters of the abdomen and are brown in color, and has a narrower body. Both of them are flightless. The female oriental cockroach looks somewhat similar to the Florida woods cockroach.

What do cockroaches eat?

Cockroaches are not fussy eaters, they are omnivores which means they will feed on almost anything, including refuse, faecal matter and even other cockroaches.

This cannibalistic tendency is thought to be a way of regulating population size by the cockroaches themselves. If other food is scarce and cockroach numbers high, then these insects will eat each other.

They do require access to water and will be generally found in inaccessible harbourages (nooks and crannies, to use their technical term), close to water and food.

Cockroaches can survive for several months without food, but will not live for more than a few days without water.

Signs cockroaches are about

Although the obvious sign of a cockroach infestation is spotting a
live one, cockroaches are nocturnal, so it’s unlikely you’ll see them
during the day. Instead, you’ll need to check for signs of their

These can include:

  • Droppings
  • Egg (ootheca) cases
  • Shed skins
  • Obnoxious odour (large infestations)
  • Damage to food or packaging.


Cockroach Pest Control


When foraging for food and water, Cockroaches can contaminate food, utensils, and preparation surfaces as they go. They taint food with an obnoxious smell and can be vectors of disease, capable of carrying the organisms which cause food poisoning in humans and many other bacteria.

Cockroaches can ruin an organisation’s reputation. If clients and customers spot evidence of cockroach infestation in the premises you manage, they are likely to complain and request a refund, report on your company negatively potentially resulting in closure by an Environmental Health officer.



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