Fourmilab is surrounded on three sides by farmland. In the summer, bugs are in every single place. Faced with this situation, defence in depth is the only possibility: window screens, bats, Odonata on the pond, fly strips on the home windows and swatters in each room, and because the last degree of terminal defence, high voltage bug zappers with ultraviolet fluorescent lures. These usually are not elegant units, but they get the job done. The principle couldn't be less complicated-flying insects, whose compound eyes see long-wave ultraviolet mild that mammalian eyes don't, are attracted by the lure tube, which appears to emit a dim blue light to humans. To achieve the light, they should fly between wires electrified with between four and eight kilovolts which, when the insect completes the circuit, kill-a-bug. The one disadvantage (no less than if you are not a flying insect) is that they don't appear to last very long. After a bit of a couple of summer season, the bulb either begins to flash on and off like a strobe gentle or simply refuses to light in any respect. https://marketingme.wiki/wiki/User:KingBlocher3258