If you are a hacker, DIYer and you don’t want to buy an ultrasonic repellent, you can build your own using free schematics on the web. The one above from electronic-circuits-diagrams ...

Are you tired of bugs, insects, rats, and other rodents in your house? It might be time for you to invest in an Ultrasonic Repellent.  I’ve personally been using them for over 10 years and do recommend them over sprays and whatnot. Here’s a commercial-grade ultrason ...