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Wasps
Wasps are generally regarded as nuisance pests or a threat to health. They are scavengers, and can extend the damage caused by other pests and diseases. The need to collect wood to construct nests means that wasps may damage the wooden fabric of buildings, fences and even garden furniture. Wasps are a particular nuisance at the end of the summer when workers indulge their passion for sweet materials, which can lead to contamination of foodstuffs. The ability of the wasp to cause painful stings presents a threat - if the victim suffers an allergic reaction, the consequences can be severe.
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Worker wasp imbibing fruit fluid
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Close-up of a fly
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Flies
Houseflies can transmit intestinal worms, or their eggs, and are potential vectors of diseases such as dysentery, gastroenteritis, typhoid, cholera and tuberculosis. They will frequent and feed indiscriminately on any liquefiable solid food, which may equally be moist, putrefying material or food stored for human consumption. Flies liquefy food by regurgitating digestive juices and their stomach contents on to the food substance.
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