Ultrasonic insect repellents can quickly and effectively drive away pests - if you are considering using non chemical methods to reject pests, we suggest that ultrasonic insect repellents are devices that emit continuous noise at frequencies that humans cannot hear. These sound waves aim to disperse, harass, and stop common household pests such as cockroaches, spiders, mosquitoes, ants, and rodents. The intelligent multi frequency ultrasonic conversion system allows pests to hide nowhere.100% safe for children and pets, protecting your family in a healthy and peaceful way - insect repellents are 100% safer than traditional mosquito repellents. Many people naturally worry about the safety of their pets when using insect repellents. Research has found that although cats and dogs can hear sound waves, humans and domestic pets cannot hear ultrasound. Non toxic substances, odors, and chemicals are safe and harmless to children, pregnant women, and pets.How to use ultrasonic spray at home - insecticide is easy to use. All you need to do is plug the insect repellent ultrasound into the power socket, and when the blue night light comes on, it will start insect repellent. Insect repellents should be placed in areas where noise is not affected by walls and furniture. It is recommended to install this insect repellent at a distance of 30-50 inches from the ground (for flying pests) and 10-30 inches from the ground (for crawling pests).360 No Dead Corner Protection for Your Home - Effective coverage of up to 1600 square feet for each type of pest control. Due to the inability of ultrasound to penetrate walls and solid objects, it is recommended to use one room per unit. Protect your home with no dead corners in 360 degrees. It is widely used in households, warehouses, offices, restaurants, supermarkets, hospitals, granaries, etc