1. Ultrasonic insect repellent, quiet and effective to repel pests - if you are considering using non-chemical methods to repel pests, we recommend using ultrasonic insect repellent is a device that makes continuous noise, and its frequency is too high to be heard by humans. These sound waves are designed to disperse, harass and stop common household pests, such as cockroaches, spiders, mosquitoes, ants and rodents. 2. Children and pets are safe and protect your family in a healthy and peaceful way - insect repellents are safer than traditional mosquito repellents. Many people naturally worry about the safety of pets when using insect repellents. The study found that although cats and dogs can hear sound waves, humans and family pets cannot hear ultrasonic waves. Non-toxic substances, odors and chemicals are very safe and harmless to children, pregnant women and pets. How to use ultrasonic insect repellent at home - insect repellent is easy to use. What you do is plug the insect repellent ultrasonic 3. into the power socket. When the blue night light is on, it will start to repel insects. The insect repellent should be placed in a place that will not be affected by the walls and furniture. It is recommended to install the insect repellent 30-40 inches from the ground to prevent flying insects, and 10-30 inches from the ground for crawling pests. 4. Protect your home with 360 dead angle - the effective coverage area of each pest control can reach 1600 square feet. Because ultrasound cannot penetrate walls and solid objects, it is recommended to use one room for one unit. 360-degree protection of your home. 5. Safe use: The best insect repellent is non-toxic, odorless, environmentally friendly, and free of chemicals, and is safe for humans and pets (except hamsters). This indoor ultrasonic insect repellent is safe. Low-frequency electromagnetic sound waves are not effective for human ears and pets. You can use it safely.