Spider Extermination and Control pg 3. EVEN BETTER NEWS: You can reduce the need to exterminate spiders anywhere by implementing changes that reduce their numbers naturally. Spiders don't usually go where prey isn't abundant (brown recluse spiders are an exception; call or send me an e-mail if you think you have brown recluse spiders in your home). Reducing insect populations usually reduces spider populations, often dramatically, in the same locale.

Many, if not most, yard spiders are diurnal (day-active) feeders (though recluse spiders, and many orbweavers are nocturnal, i.e., night-active); after the sun goes down insect activity tapers off and many diurnal spiders rest, especially the wandering hunters and jumpers that rely on vision to locate prey. Ordinary outside lighting transmits short wavelength illumination in the blue-ultraviolet spectrum that attracts insects, encouraging wandering spiders, such as hunters and jumpers, to feed as long as the lights are on. Wolf spider populations, in particular, increase around such lights. Opening a door at night or the next morning may let some of these inside. An easy fix is to install bug lighting in outside lights that are left on after dark.

You could go the expensive route and buy specially-made bug lights. These bulbs are available with traditional incandescent, halogen, fluorescent, and LED elements, but they cost 2-3 times the cost of ordinary bulbs. To cut costs, you can make bug lights from ordinary bulbs (but don't do this with any super-hot bulbs, including halogen, mercury-vapor, or sodium-vapor bulbs) by painting the bulbs yellow. I prefer sun yellow or canary yellow pigments, as they are effective at masking out the ultraviolet. Make sure you get good coverage on all the transparent or translucent glass surfaces of the bulb, but avoid too thick a coat. Be careful with fluorescent bulbs, as breakage releases toxic mercury compounds. NEXT PAGE

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