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Get Rid of Cockroaches
Cockroaches are one of the most common pests found across the world .
Carrying serious diseases – salmonella, dysentery, and gastroenteritis.
There are a number of different cockroach species..
cockroaches can have an impact on your health.
Cockroaches are insects belonging to Order Blattodea. They represent a primitive and highly evolved group of insects whose origins extend back at least 300 million years. Fossil evidence suggests that little change in their general body form has occurred since that time
As a group, cockroaches exploit a diverse range of ecologies, living among decaying leaf matter, under bark, in caves and burrows, on the foliage of shrubs and in the nests of social insects, boring into wood and even adopting a semi-aquatic habit. While there are about 3500 species of cockroach worldwide, only about ten species have seriously exploited the dwellings of humans. Some species have become very successful scavengers that cohabit with people in many, indeed most of the human communities around the world.
Identify Your Cockroaches
German cockroach (Blattella germanica)
The relatively small German cockroach is probably the most widespread and successful cockroach that coexists with humans in buildings. It is the most prolific breeder of all the pest cockroaches, taking as little as 40 days to develop from hatching to adulthood. Adults are light amber-brown, with two dark longitudinal stripes on the pronotum. Egg cases are usually carried by the female until just prior to hatching, and these may contain 30-40 eggs. Generally, there may be 3-4 generations a year.This cockroach seeks conditions that provide warmth, moisture and food.
The vast majority of infestations are associated with kitchens or other food handling areas, both domestic and commercial. Within such areas, adults and nymphs find cracks and crevices in which they hide during the day. If numbers of cockroaches are seen during daylight, or if cockroaches are observed in non-food-handling areas within a building such as bedrooms, it is likely that the building is supporting an enormous population. In kitchens, pantries, storerooms and other food-handling areas, the German cockroach is usually found under sinks and cupboards, in and under drawers, in and around water heaters and appliances such as refrigerators, stoves, and in wall voids adjoining kitchens and bathrooms.
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American cockroach (Periplaneta Americana)
The American cockroach is probably the largest cockroach that infests dwellings and utilities. Adults are red-brown in colour with a pale yellow border around the pronotum. Egg cases are usually dropped or glued to surfaces within reasonable proximity to food and water. Up to 16 eggs hatch from each egg case, and the nymphs may take 6-12 months to develop into adults. Adult lifespan may be 6-12 months and females may produce up to 50 egg cases.As the American cockroach prefers warm, moist, dark conditions, it tends to live indoors in colder regions but mainly outdoors in warmer regions.
Partly because of its large size, it tends not (so often) to infest the dwelling parts of buildings (unlike the German cockroach). Nevertheless, it is a very widespread pest, occurring in wall, roof and subfloor voids and in and around sewers, drains, moist cellars, grease traps and rubbish dumps. Buildings infested or visited include hospitals, bakeries, food stores, warehouses, factories and domestic residences. It seems to have preference for decaying organic matter, but will eat most human or animal foods and also book bindings, paper and clothing (particularly if soiled). Adults with a water source may survive for about 2-3 months without food.
Smokybrown cockroach (Periplaneta fuliginosa)
The Smokybrown cockroach is relatively large, and adults are dark brown to almost black with no pale markings. Its life history is somewhat similar to that of the American cockroach.
Egg cases dropped or attached to surfaces by females may contain up to 26 eggs, which, when hatched, may require 6-12 months for nymphal development. Adult lifespan is probably about 6-12 months, and during this time, a female may produce close to 20 egg cases.The habits of the smokybrown cockroach are in some ways similar to those of the Australian cockroach, and it is often found in garages, sheds, subfloor areas, roof voids and in and around grease traps and drains.
The Smokybrown cockroach does, however, seem to have a particular preference for food materials of plant origin, so is often a pest in greenhouses, nurseries and gardens. It is most often regarded as an outdoor species, and very seldom does it infest the dwelling parts of the buildings.
Adults are fully winged and can fly short distances in warm conditions, often being attracted to lights at nights.
Australian cockroach (Periplaneta australasiae)
The Australian cockroach is relatively large. In appearance, adults are similar to the American cockroach; but the body is a darker brown, the yellow markings on the pronotum are more clearly defined, and the foremargins of the forewings have a distinct yellow marking. Egg cases that are dropped or glued to surfaces by females may contain up to 24 eggs which, after hatching, require some 6-12 months for nymphal development. Adults seem to live about 4-8 months, during which time females may produce up to 20 egg cases.
Preferring food of plant origin, this cockroach may be encountered in greenhouses and under bark and leaf litter in gardens. As well, it is found in subfloor voids, wall voids, roof voids, around utilities in factories and other buildings, in outhouses, and in and around woodpiles. It tends to be more frequently encountered in warm, subtropical conditions.
Brownbanded cockroach (Supella longipalpa)
The brownbanded cockroach is relatively small. Adults are pale brown in colour with very pale bands across thorax and abdomen. The females wings are somewhat reduced while those of the male extend past the abdomen. Egg cases, which may contain up to 18 eggs, are glued to surfaces and the hatched nymphs require 2-4 months to develop into adults. Adults typically live for up to 6 months, during which time the female produces up to 13 egg cases. This cockroach tends to be an indoor pest, frequently infesting the dwelling parts of buildings, as well as offices, hospitals, restaurants, storerooms and so on. Unlike the German cockroach, however, its activity may be scattered throughout a building rather than being restricted mainly to kitchen areas.
Egg cases (glued), nymphs and adults may be found in wardrobes, dressers and cabinets and behind bookshelves or wallpaper. It prefers warm temperatures, but does not seem to require as much moisture as the German cockroach.
Oriental cockroach (Blatta orientalis)
The medium-sized oriental cockroach is dark brown to black. The female has much reduced wings, while the male has wings that cover most, but not all, of the abdomen. Egg cases are usually glued to surfaces and may contain 16 eggs. Nymphal development may require 6-18 months. Adult lifespan is usually about 3-6 months, and a female may produce up to 14 egg cases during her adult life.The oriental cockroach is the major pest cockroach of buildings in Britain.
Its preference for relatively cool conditions in reflected in its most southern distribution in Australia, where it is commonly encountered outdoors (under leaf litter and bark) and in damp subfloors, around drainage systems. It is relatively sluggish and is usually located at or below ground level in buildings. It feeds on a variety of decaying organic matter, frequently feeding in garbage disposal areas. As well, starches and sizing of wallpaper and books may be attacked.
**Reference source: Urban Pest Management in Australia 5th edition