More Advanced Ultrasound Mouse and Rat: The upgraded chip helps produce stronger ultrasonic waves which can influence the brains of insects and rodents, repel them away from your home. The pest repeller can control mice, rodents, mosquitoes, ants, spiders, cockroaches, rats, etc. Soft and Quiet Lighting Ultrasonic Mouse Repeller: This pest repeller is designed with a blue light as a working signal which is not too flashy at night, you are always relaxed and easy to sleep. Great Mosquito Repellent Control Application: With the latest chip, every mouse repellent can control effectively up to 240 m2. The pest control device can maximize the effect with one unit per room since the sound waves would not be transmitted through the walls. Ant repeller safety and comfort: The pest control repeller is quiet, odorless and radiation-free. It repels pests and rodents with a low frequency sound wave that does no harm to humans and pets. Also, the longer the working time, the better the repeller.