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Wasps

Common Name: Wasp Scientific name: Vespula spp Size 10-16mm

Biology: Wasps are social insects and live in nests or colonies. Typically, only inseminated queens over winter and do so in

sheltered places. She will begin to make a few cells in a small nest to begin a colony. One egg is laid in each cell and the queen

feeds the developing lava. After about 30 days the first 5-7 workers emerge and shortly take over all the work except for laying

eggs. Nest size varies and averages 2000-6000 cells. Nests usually contain 1000-4000 workers. The founding Queen, the

workers and males all die during the winter the new queen will hibernate over winter.

Habits: Depending on the species, the over winter queen will usually select either a subterranean or aerial nesting site. The

German wasp (common wasp) normally nests in buildings. There are usually guards near their nest. Some people become

hypersensitive to their stings and future stings can become life threatening. Those nesting in buildings are only a problem when

the nest or nest entrance is located near human activity.

Treatment: Wasp nests are treated with a powdered insecticide called Ficam w, this is injected directly into the nest if it can be

located. If the nest itself is hidden away out of site, then the entrance & exit holes used by the wasps are treated, the wasps

then walk through the insecticide taking it back to the nest.

German cockroach

German Cockroaches Scientific Name: Blattella germanica Size 13-16mm

Biology: The reason that German cockroaches are such successful breeders is they carry the egg case (Ootheca) until 1-2 days

within hatching. Each egg case produces between 30-40 eggs and they can produce up to 8 cases a year. Development time

from egg to adult varies between 54-215 days depending upon the environment. Adults can live on average 200 days.

Habits: German cockroaches are found throughout structures but have a preference for warm (21C) and humid places. They are

usually found in kitchens and bathrooms, but they also occur in the lounge and bedroom etc. Any crack or crevice they will use

as harborage. For young adults (Nymphs) they need a crack of only 1mm adult's needs only 5mm. They feed on almost anything

including all kinds of food, and such things as soap, glue and toothpaste. Because of the way they spend their time in the

harborage about 30% of the young nymphs will not be seen during an inspection.

Treatment: The treatment for cockroaches can take several visits to eradicate a current infestation, especially if it has been left

to worsen with time. After a full inspection of the property a full insecticidal spray is carried out in all the badly affected areas,

along with a gel bait insecticide applied in all areas where the cockroaches are active. Large insect monitors are also put down to

trap as many as possible, the insect monitors play a vital roll through out the treatment as on each visit they are inspected and

when we finally find no cockroaches on the monitors, we can determine that the infestation is cleared. Once the treatment has

been carried out it is advised that the areas treated cannot be cleaned for at least 2-3 weeks and any dead roaches found after

the treatment are left alone as other cockroaches will eat them and ingest the insecticide and die as a result of second

generation poisoning.