We all use technology these days. In fact, there are very few things we do today that doesn’t involve an app or something to plug in. Pest control is no different, and thankfully modern advancement means making our lives easier when it comes to getting rid of rats or eliminating mice (or even insects). In this article, we are going to look at the top, most commonly used type of device…
One of the most widely used technologies when it comes to controlling pests, is the technology in Ultrasonic Rodent Repellers (URR). This technology is mainly used in controlling rodents like rats and mice. It works in a way that is completely different to the techniques of traps and poisons, and uses simple, small devices that can be easily plugged into any domestic socket. High frequency ultrasonic sound waves of between 33 and 63 kHz are emitted by URR, so as to repel rodents from any room where the device is plugged in, by creating an environment that is acoustically hostile. In other words, they can’t bear the sound that the devices give out. 
Rodents are disease carrying creatures, so you don’t want to handle them unless you have to, as doing so may pose a threat to your health and wellbeing. That’s where URR technology comes into its own…repelling rather than needing to trap or catch the rats or mice. Contact with the rodents is therefore minimised, and there are no dead rodents to be disposed of. It is also a lot safer than handling poisons and traps.
The ultrasonic frequency range given out by these devices is well above the maximum hearing range of human beings (and common pets like birds, dogs, fish and cats). It’s too high for us to hear, as our eardrums cannot vibrate fast enough. Luckily for us, though, the sound drives rodents mad, and ultimately drives them out of the house, due to the auditory stress induced by the sound that is produced at such a high level of intensity.
To sum it up, this technique, unlike traps and poisons, classically modifies the behavior of these animals and discourages an infestation of rodents, forcing rats and mice out holistically, and bringing about a reduction in their population over time. 
Note that any room inhabited by rodent pets, like—ferrets, guinea pigs, hamsters, gerbils, squirrels and (of course) pet mice or rats; should never have a URR installed in it, as this will also put your pets under a great deal of auditory stress.
Many people are concerned that this technique might not continue to work for rat control and mouse control in the long term due, to the fact that the rodents may be accustomed to the sound. However, this is rarely the case if you install devices where the pattern of intensity and sound frequencies alternate continuously, which stops rodents from getting used to the sound.