Fishing – trapping – and vermin destroying – Vermin destroying – Insect
Patent
1995-06-09
2000-03-28
Rowan, Kurt
Fishing, trapping, and vermin destroying
Vermin destroying
Insect
43121, A01M 120
Patent
active
060415436
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
The present invention relates to pest control by trapping and/or killing and is especially, but not exclusively, related to the control of flying or crawling insects and the like.
The most common domestic insect pests are houseflies, mosquitoes and cockroaches.
The common housefly, Musca domestica, occurs throughout the world in domestic situations. Along with similar species, such as, the lesser housefly, blowflies and flesh flies, it contaminates food and spreads diseases, such as, typhoid and cholera, and also carries the eggs of parasitic worms.
The housefly is also a problem on refuse tips and is becoming a progressively greater nuisance in agriculture, where it breeds in deep litter breeding units for poultry and other animals.
The cockroach is ubiquitous in urban situations in the tropics and sub-tropics and is common in heated buildings in Britain, the rest of Europe and North America where food is prepared. Large cockroach populations are found in sewers and drains and many disease organisms have been isolated from them.
The mosquito is both a severe nuisance pest and vastly important as a vector for blood-borne diseases, such as, malaria, yellow fever, dengue and the like.
Control of those insect pests is becoming more urgent as human populations increase and provide more resources for them to breed.
Insecticide use inevitably encourages the evolution of resistance. In Britain, as in many other countries, prolonged attempts to control houseflies in animal rearing systems have led to the increasing incidence of flies which are resistant to the major insecticides in common use. These insects can spread into private houses. For instance, there was national concern recently over the discovery of pyrethroid-resistant houseflies in households in southern Hampshire and as a result, sales of sticky fly-papers rocketed.
Control of insects in areas where food is prepared depends upon scrupulous hygienic procedures, periodic fumigation with insecticides and/or the use of traps.
There is increasing public pressure throughout Europe for the development of environmentally-acceptable pest control measures in which synthetic insecticides are not used. The present invention provides a unique opportunity to meet that concern.
Commercially-available insect traps divide into three basic types: traps (for cockroaches and others) with sticky inserts; dome-shaped with a funnel-shaped entrance therebelow through which insects can enter; and for attracting insects on to a high voltage grid. These insects are killed by electrocution. Variants on this model include the so-called "roach-buster" trap for cockroaches and a fly trap using a low-voltage grid to dislodge flies on to a sticky surface.
In particular, some traps for flying or crawling insects use conventionally an attractant, for example, a light source or chemical attractant, and a device which either provides a barrier to prevent the escape of the insects or dislodges the insects on to an adhesive surface from which the insects cannot escape. An example is the traditional bell-shaped fly trap whose base has a narrow central upwardly projecting tubular opening and whose bottom contains a liquid attractant, such as, a fermenting solution. Insects fly up the tubular opening into the trap and cannot escape, eventually falling into the liquid and drowning. This trap is inefficient, because it has a small entrance. Whilst it finds applications, in a modified form known as a McPhail trap, in agriculture against fruit flies, it is not suitable for domestic use because of its large size, unsightly appearance and unpleasant decomposition products.
More common for indoor applications than the simple mechanical traps is the use of chemical insecticides or high voltage devices. There are many versions of the high voltage trap for flying insects in which an intense blue light attractant is arranged behind a metal grid across which a high voltage is applied. Insects attracted to the light fly into the grid where they are severely burned. These electric traps suffer
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Rowan Kurt
University of Southampton
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