Before going into the analysis, you should know exactly what this new age ultrasonic pest repeller is and why it has become so popular in the market. Pests are everywhere in our household and they are difficult to trace due to their hiding skills. They are responsible for spreading harmful viruses and disease-causing bacteria such as salmonella and hantavirus in human beings. Pests are also responsible for damage to infrastructure as well. So, what role does an ultrasonic pest repeller play in controlling pests? As claimed by the manufacturers of the device, ultrasonic pest controllers are electronic devices that can emit high-frequency sound waves. These sound waves are designed in a way that can paralyze or kill pests immediately. We just need to plug In To Keep Spiders Away. This pest repeller can bring out the pests from every nook and corner of the house before they start creating a nuisance for you.