The latest frequency conversion: the powerful 5 W designed insectifuge can issue ultrasonic waves from 22 to 65 kHz. In addition, our insectifuge is also equipped with a real-time visual display of the ultrasonic frequency to prevent parasites from a fixed frequency, and the microcomputer automatically changes the frequency by intermittentness. Make the product effective and intuitive for you terrible light: according to experiences, mice are naturally resistant to light and prefer dark and humid environments. Consequently, our anti-rowing repellents sparkle with lights to scare the mice and (brightness in 3 levels). This is different from repellents against rodents on the market. This makes our products more effective large area coverage: Each ultrasonic electronic repellent is suitable for supermarkets. It is more powerful than other inexpensive repellents. Note that ultrasound cannot cross the walls. Although our repellents work, if you have a big infestation, we recommend that you