A great number of insect led wall washer for sale species are attracted to light of various wavelength. Although different species respond uniquely to specific portions of the visible and nonvisible spectrum (as perceived by humans), most traps or other devices that rely on light to attract insects use fluorescent bulbs or bulbs that emit ultraviolet wavelengths (black lights).

Hundreds of species of moths, beetles, flies, and other insects, most

of which are not pests, are attracted to artificial light. They may fly

to lights throughout the night or only during certain hours. Key pests

that are attracted to light include the European corn borer, codling

moth, cabbage looper, many cutworms and armyworms, diamondback moth, sod

webworm moths, peach twig borer, several leaf roller moths, potato

leafhopper, bark beetles, carpet beetles, adults of annual which grubs (Cyclocephala), house fly, stable fly, and several mosquitos.) The mosquitoes Ochlerotatus (formerly Aedes) triseriatus, Ochlerotatu (also formerly Aedes) hendersoni, and Aedes albopictus are

not attracted to light, however.) Lights and light traps are used with

varying degrees of success in monitoring populations and in mass

trapping.

Although numerous companies market devices that use

light as a lure for mass trapping or removal trapping, using light to

trap out insect infestations is effective in only a few specific

situations. One widely used but very ineffective application of light

for insect control is the placement of electrocutors or "bug zappers" on

lawns or patios. Such uses are ineffective for at least two reasons.

First, many insects that are attracted to the area around the light

traps (sometimes from considerable distances) do not actually fly into

the trap. Instead, they remain nearby, actually increasing the total

number of insects in the immediate area. Second, these lighted

electrocutors attract and kill a wide variety of insects, the

overwhelming majority of which are not pests. The nonpest species killed

by such devices include such beneficial insects as the green lacewing, a

predator that attacks a variety of plant pests.

Insect

electrocutors can be effective in certain indoor situations, especially

in food warehouses, processing plants, and restaurants. In these

facilities, electrocutors are placed in otherwise dimly lit areas where

their light is not visible from outdoors. In such locations the trap

does not lure insects into the building, yet it does attract and kill

certain flies, moths, and beetles that are pests of stored products or

nuisances in food production areas (see Gilbert, 1984). These traps can

also be used somewhat effectively in barns and stables to reduce some

fly and mosquito infestations. The efficiency of electrocutors in such

situations appears to be low, however, and they must be positioned so

that they do not attract insects into a building from outdoors.

Although

using electrocutor-light traps outdoors is not efficient, the placement

of outdoor lights can be important. Positioning outdoor lights away

from entrances, windows, or other openings reduces problems associated

with insect activity around the lights. Flood lights directed at loading

docks, for instance, do not lure insects into food warehouses as so

overhead lights mounted just inside the loading dock door. Placing

outdoor lights several feet away from doors of homes and apartments also

concentrates insect activity away from the sites where they cause the

most annoyance. In addition, yellow light bulbs attract fewer insects

that white incandescent lights or fluorescent bulbs.

For more helpful information, see links below:

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Recommendations on what pay attention when buying porch light fixture