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Ultrasonic and Subsonic Pest Control Devices EB1663   Author(s): Leonard Askham This bulletin discusses the effectiveness of ultrasonic and subsonic devices for pest control. The author's verdict--save your money, research shows these devices don't work. Publisher: Washington State University Published: February 1992.   2 pages.   Out of Stock           Free Download: Price: $1.00    See also...  Heat up Your Life! The Chile Adventure of a Lifetime More Info Our Price: $39.00  Roots, Shoots, Buckets & Boots More Info Our Price: $13.95  The Pea and Lentil Cookbook-From Everyday to Gourmet More Info Our Price: $24.95

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