Pest repellents with built-in ultrasonic technology are basically devices that are supposed to kill, injure or repel insects, rodents and other domestic pests with an emission of high-frequency audio signals. During the past couple of years, there was an ongoing debate about their effectiveness, and many laboratories conducted tests that disputed the efficiency of these products.
If left untreated, insects and rodents could potentially transmit fatal hantavirus, salmonella, and various diseases that cause damage to the health of human beings or objects they live in. Typical signs of infestation are chewed bags of food, feces, and structural cavities that open the door to someone’s home.
Cockroaches are undoubtedly the most persistent and the most annoying sort of pest there is, particularly in large cities. Their presence can be found in almost any domestic or industrial object on the planet. Infestation of this kind is evidenced by the bug eggs and droppings, usually found in cabinets and cupboards. Other hard to spot locations include kitchen drains and places behind refrigerators and dishwashers. Ultrasonic repellents are advertised as a go-to solution for eliminating this kind of bugs.
How ultrasonic technology works
The appliance of audio technology in pest control is not a new strategy; the agronomists of the ancient Chinese empire practiced the usage of several mechanical sensory devices to deal with rodents who devastated their crops and invaded their buildings. Ultrasound, a term which stands for audio frequencies transcending the human ear’s detection levels. It has seen its implementation in the pest control industry just a couple of times in the recent past, due to its ongoing controversy.
The devices of ultrasonic nature are typically plugged into the electrical outlets in your home. Then they supposedly emit sounds that ought to be displeasing to pests of all kind. These sounds should cause some sort of physiological shock, which shows its manifestations in non-voluntary muscle contractions, frenzy running, and in the end termination of all living functions due to the brain hemorrhage.
In theory, these devices should confuse pests like rodents to such extent that they eventually run for their lives. It should disrupt their food gathering routine, and prevent them from communicating, building nests and breeding. Ultrasonic contraptions are usually appealing to most consumers. Because they are pretty easy to use and they are almost dead – silent to human ears. They should also eliminate the whole mess of poison chemicals and traps. Some may interpret as an inhumane form of dealing with animals. Gadgets that function on subsonic and electromagnetic principles are also present on today’s market. Their performances differ in signal rate, frequency, and intensity.
Are these devices effective at all?
Studies conducted to determine the effectiveness of ultrasonic repellents have come up with different results. Michigan State University tests performed in 2015 concluded that devices of this kind were pretty effective at confusing insects like crickets. But at the same time, they had almost no effect on pests like cockroaches. Spiders and termites were left completely unaffected.