Why should the glow of light traps not be visible from outside a structure?

The correct reason why the glow of light traps should not be visible from outside a structure is that it can attract insects into the structure. Light traps are designed to capture flying insects by luring them in with light. If the glow from these traps is visible from outside, it can inadvertently draw insects toward the building, which may defeat the purpose of the trap by bringing more pests into the area rather than controlling their population.

Maintaining the effectiveness of light traps relies on strategically positioning them to limit their visibility from the outside. By doing this, the traps can effectively capture insects without leading to an influx of new pests that could enter the structure, causing further infestations. Limiting outside visibility helps to create a barrier that keeps the interior environment more controlled and less attractive to incoming insects.