The Use of Fly Killers

Fly Killers

Electric fly killers (EFKs) utilise ultra violet (UV) light to attract flying insects.
Ultra violet tubes create UV at the optimum level to match the eye sensitivity of flying insects.
There are two common methods of killing flying insects:-
1) Electrified killing grid and 2) Glue board


Every application is unique, so each situation requires an individual assessment for fly killer siting, however, there are basic principals that should be followed:

Recommend enough EFKs to cover the area to be protected.
Install EFKs away from sources of light competition, such as windows, doors and high powered luminaires.
Consider sources of heat and air flow, such as heaters & AC units.
Don’t install EFKs directly above sensitive areas, such as food preparation areas.
Glue board units should be used in sensitive applications such as food preparation or production areas.
Consider access for installation and future servicing.
Wherever possible, fly killers should be positioned at 90° to sources of natural light, such as windows, doors and skylights.
Fly killers should be positioned in between potential entry points, so as to intercept flying insects before they reach sensitive areas.
Fly killers should not be sited either too high or too low in the area to be protected, with an optimum height of around 2 metres.


We understand that our customers work within a variety of environments and need a choice of tubes which will offer solutions to the wide range of issues faced. We can supply a comprehensive range incorporating the leading brands and technologies to ensure that it’s easy to find the right tube every time.


We recommend that UV tubes are changed every 12 months to ensure maximum efficacy.
The levels of UV produced by fluorescent tubes deteriorates rapidly throughout the life of the tube. Whilst the tube will continue to glow blue or green indefinitely, after approximately 8,000 hours the amount of useful UV (which humans cannot see) drops to a level where it is no longer attractive to flying insects.
As a result, UV tubes should be replaced annually to ensure they remain effective in producing useful levels of UV. This replacement cycle is typically under taken just before the peak insect season, (March/April within Europe) to ensure the fly killer is producing the maximum amount of UV throughout the critical insect season.


Easily recognised by their glowing green light, Synergetic® tubes have been developed to attract a much wider range of flying insects than traditional blue UV lamps. Based upon a unique phosphormix, patented technology ensures that a broader ‘two peak’ wavelength is maintained (368nm and 540nm) attracting a wide range of insects including moths, whilst attracting the common housefly as effectively as traditional blue UV tubes, giving you the best of both UV technologies. Extensive testing has been carried out over many years by independent entomologists and test laboratories , showing the benefits of green light in combination with UV. A wide diversity of insects were shown to be more attracted to Synergetic® light, including greenhouse white flies, silver leaf whiteflies, thrips, leaf hoppers, Indian meal moths, Mediterranean flour moths, tropical warehouse moths, warehouse moths, plus many more!