For an easy and effective way to deter insects in your home, the Transonic Bug Chaser from Bird-X makes a great pick. This sound-based pest repeller keeps away insects and small rodents without the use of chemicals or traps. Instead, it gives off an ultrasonic sound wave that deters pests from getting too close. The frequency of the pest deterrent can't be heard by most humans, making it an annoyance to insects but not to you. Set it as a continuous sound to make sure pests always keep their distance, or use it as a motion-activated pest repeller that only triggers when pests get close. With two in this pack, you'll be set to take care of multiple indoor areas.