Be wary of product that promise pest control
Alternative means of controlling urban insect pests by using ultrasonic frequencies are available and marketed to the public. However, few of these devices have been demonstrated as being effective in repelling insect pests such as mosquitoes, cockroaches, or ants. Despite the lack of evidence for the efficacy of such devices, they continue to be sold and new versions targeting bed bugs are readily available.
However, according to a soon-to-be-published article in the Journal of Economic Entomology, commercial devices that produce ultrasound frequencies are NOT promising tools for repelling bed bugs. In “Efficacy of Commercially Available Ultrasonic Pest Repellent Devices to Affect Behavior of Bed Bugs (Hemiptera: Cimicidae),” , authors K. M. Yturralde and R. W. Hofstetter report the results of their tests of four commercially available electronic pest repellent devices designed to repel insect and mammalian pests by using sound.
Short and clear: These devices emit sound that neither repels nor attracts bedbugs. This suggests that the claims made by the manufacturers have not been tested and don’t even have a scientific basis. While many people would prefer an easy solution to bedbug infestations that don’t involve chemicals and a lot of work, it currently doesn’t seem there is one.