Imagine getting rid of smoky mosquito coils, liquid mosquito repellents induced with harmful chemicals or sprays that could cause a bout of coughing. And instead, all that you need to do, is to own a device which can emit waves which are inaudible to you but cause havoc to mosquitoes. Wouldn’t that be most convenient?


But hold on, maybe it is too good to be true.


Firstly, let us figure out what are ultrasonic repellents?


Ultrasonic repellents claim to emit ultrasonic sounds which are inaudible to the human ear but can repel a variety of pests including mosquitoes, bats and rats. These have been around for decades in the form of ultrasonic bat repellent or rat repellent machines. Earlier they would claim to emit ultrasonic waves through radio or from some other machine. 


However, nowadays, you may have come across different apps which claim to emit ultrasonic waves to repel pests. 


But do these actually work?


Several tests and research studies have been conducted on ultrasonic repellents. Yet, none of them has stated with conviction that these repellents actually work. When researchers test different frequencies, it had no impact on repelling mosquitoes. 


A review article published in 2010 scrutinized 10 field studies. In each of these studies, ultrasonic repellents had been tested. The conclusion was that they had no impact in reducing mosquito bites. But this hasn’t stopped even leading multinationals and small businesses to claim that they have invented an ultrasonic pest repellent that actually works. These claims are dangerous, especially if naïve individuals living in mosquito-prone areas end up purchasing these devices or apps with the fervent belief that they could actually repel mosquitoes. 


In fact, according to a line of thought, these ultrasonic frequencies end up attracting mosquitoes rather than repelling them. This could be no less than playing a cruel joke on those who actually suffer from health hazards due to the menace of pests. 


What must one do?

Well, if you need relief from pests, then you must rely on a credible pest control agency to help you out. Such agencies would be using chemicals which aren’t harmful to humans but deadly for pests. Pest control agencies will not just eliminate these pests but will also assist you to prevent infiltration as well as infestation by pests such as mosquitoes, rats and bats.




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