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An insect killer lamp, also known as a bug zapper or insect trap, is a device designed to attract and eliminate flying insects. It uses a combination of light and sometimes heat to attract insects, and upon contact, they are electrocuted or trapped, depending on the design.

It's worth noting that insect killer lamps are more effective against certain types of flying insects than others. They are particularly effective against night-flying insects that are attracted to light sources. However, they may not be as effective against other types of pests, such as crawling insects or insects that are not attracted to light.