Electric Fly Killers

Ultrasonic devices claim to use ultra-high frequency sound waves to chase away rodents and arthropod pests like flees, cockroaches, etc. The Lentek Ultrasonic Pest Control emits a fluctuating ultrasonic sound from higher to lower frequencies.

Amazon Sales Rank: #93846 in Home Color: White Brand: Koolatron - Each PestContro 500 Unit Covers a single room (Approximately 500 Sq. ft. of area) with Ultrasonic protection. - Simply Plug it in and the product begins emitting Ultrasonic protection immediately. - LED Power Indicator confirms product is working correctly.

Very helpful customer reviews 15 of 17 people found this review helpful. It works! For DH I have been using electronic pest repellent for a long time. I wish more people knew how well they work! I put one in each room (which used to have a bunch of cockroaches, now I have none!) Fluid does not smell horrible extermination. I have recommended to others, and now happily thry use. Try it and see what I mean. 14 of 17 people found this review helpful. I'm confused! Is not that for mice and rats only? By Penny S. Mabe people write bad reviews of this question by saying that it does not work with ants, cockroaches or spiders, but says it is a product of mice and rats. I have not seen anywhere is to get rid of insects. I'll buy it because I try to get mice in my house and a favorable review says it gets rid of the mice (which is what the product aims to do.) April 4 people found this review helpful. Does not work for T. Davis House is about 1,300 square meters and have bought six of these things to use them for two months seemed to help after a few weeks, but after a month of work than the mice became as bad as ever. Waste of $$$$. See all 31 customer reviews ....