Do you have multiple pests bothering you? JUCHENG ultrasonic pest repellents use physical ultrasonic methods to effectively repel all kinds of pests and provide you with a clean and tidy home. How does the Ultrasonic Pest Repeller work? Simply connect the JUCHENG pest repellent, it will adopt automatic frequency conversion ultrasonic technology to emit ultrasonic waves and effectively drive pests away from your home. A continuous process to repel pests. Effective against mice, rats, mosquitoes, cockroaches, moths, ants, spiders, bed bugs, and more. Note: Ultrasonic waves do not get tangled between walls. For best results, install 1 ultrasonic pest repellent device in each room. For larger areas, 2 units may be required. Keep doors and windows closed to prevent pests from escaping the ultrasonic sound without being sufficiently affected. Wait about four weeks to get the full results. It is normal to experience increased pest activity during the first few weeks. For better effect, it is essential to use the product continuously until the problem is resolved.