I wish the general public would realize that these ultrasonic devices are just a sales gimmick! I mean, c’mon!!! How on earth would a $9.99 device plugged into one wall outlet would effectively repel all pests from your home??? It is modern day snake oil! The problem is that consumers buy into it and the pests remain & cause serious damage.
Staff of the Federal Trade Commission's Division of Enforcement announced that they have sent warning letters to more than 60 manufacturers and retailers of ultrasonic pest-control devices, stating that efficacy claims about those products must be supported by scientific evidence.
FTC staff reviewed print and catalog advertisements and conducted a “surf of Internet sites marketing such devices. They found that many of the advertisements make explicit claims about the products' ability to eliminate rodents or repel insects and they can not do this without scientific proof.
Read the full article….http://www.ftc.gov/opa/2001/05/fyi0128.shtm
General Manager - Staff Entomologist