How to Kill Insects with Visible Light

Zzzzzzap! Ahhh, the gratifying sound of another insect biting the dust on a humid summer night. The hauntingly seductive blue glow of the bug zapper attracts thousands of unsuspecting insects to their untimely demise. Phototactic creepy-crawlies simply cannot resist moving toward the light, and when they arrive, a 2,000-volt wire mesh awaits them. As handy as these tiny execution chambers are, they are not at all useful for farmers who are trying to protect precious stored grains...

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