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Examining the effects of pestcentro on insects. (Senior Division).

Many advertisements in science magazines claim that ultrasonic sound waves would be a new way to get rid of pests in the house. There were also reports on the Internet asserting that machines like PestCentro could actually get rid of pests and keep them out, so a decision was made to test the product. The important characteristics of the machine were its range and its effectiveness. All experiments were based more on qualitative observations than quantitative observations, although an effort was made to make a controlled environment. For the effectiveness of the machine, a blockade was made in the box used so sound would be less likely to be heard in one area than in others. Crickets were exposed to the sound. Observing the behavior of the crickets before and after the machine was turned on showed that the machine was not very effective. For the range experiment, the ultrasonic sound machine was put a distance away thinking that only the straightest sound waves would be able to get into the bottle where the crickets were kept. However, this experiment also pointed towards the fact that the product wasn't as effective as advertised.

Timothy Kim, Cherry Creek High School.
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Author:Kim, Timothy
Publication:Journal of the Colorado-Wyoming Academy of Science
Article Type:Brief Article
Geographic Code:1USA
Date:Apr 1, 2002
Words:199
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