There are a variety of pest control methods available today. One option is the ultrasonic plugin. This is a small device designed to plug into any household electrical outlet that, when turned on, emits a high-frequency sound that is unpleasant to pests. The question we are going to consider in this blog is are they effective?
Some of the benefits of this type of pest control are that they are humane, do not affect larger animals or humans and are safe to use. As to the question of whether they work or not, tests have been conducted to see how effective ultrasonic pest control 
devices are. Results showed that they were not effective on all kinds of pest, for example, spiders and ants do not seem to be affected by them and cockroaches did not appear to be bothered by them either. Studies also showed that some creatures even get used to the sound and become ineffective at deterring them. Another issue is that the high-frequency sound emitted by the plug-ins does not travel through objects so, if you have a room full of furniture, the area of pest control coverage will be a lot less.
So, based on studies it may seem that ultrasonic plug-in pest control is not an effective form of pest control, however, many consumers have found this to be a very effective pest control method. What should we conclude then? Well, if you decide you want to try them for yourself, it would be a good idea to do some research on the different brands available and read the customer reviews so that you can select the best one. Its also very important to note that if you have a particularly bad pest problem, you should consult with a pest control company who can advise you on what to do.