How ultrasonic pest repellers  work:

1. High-Frequency Sound Emission: Ultrasonic pest repeller emit sound waves typically in the range of 20,000 to 65,000 Hertz, which are higher than the audible range for humans (20 Hz to 20 kHz). This frequency range is believed to be irritating to pests.
2. Coverage Area: The effectiveness of ultrasonic pest repellers depends on factors such as the size of the device. The frequency and intensity of the emitted sound waves, and the layout of the area being treated. Larger units may cover larger areas, but effectiveness may vary depending on obstacles and materials that can absorb or reflect the sound waves.
3. Types of Pests: Ultrasonic pest repellers are primarily market for repelling rodents. Such as mice and rats, as well as insects like cockroaches, spiders, and ants. Some devices claim to repel other pests like mosquitoes, fleas, and ticks, but their effectiveness for these pests may vary.
4. Limitations:While ultrasonic pest repellers are market as safe and environmentally friendly alternatives to chemical pesticides. Their effectiveness is still a topic of debate among experts. Some studies suggest that they may have limited effectiveness in repelling pests. Especially if pests have become accustomed to the sound waves or if there are obstacles blocking the waves. Additionally, certain pests may not be affect at all by ultrasonic frequencies.
5. Placement: Proper placement of ultrasonic pest repellers is crucial for optimal effectiveness. It’s generally recommended to place them in areas where pests are likely to enter or frequent. Such as near entry points like doors and windows, or in areas where pests have been observed.
6. Maintenance: Ultrasonic pest repellers typically require little maintenance besides periodic cleaning to remove dust or debris. That may accumulate on the device’s surface. Some models may also require occasional replacement of batteries or power sources.