1. Enjoy a pest environment – the effective mouse repellent is designed to keep your living spaces, including houses, offices and warehouses, from mouse infestation. With advanced ultrasonic technology, the mouse repellent emits highfrequency sound waves that are completely harmless to humans and pets, but are unbearable for mice, rats and other rodents. Say goodbye to the hastes, gnawing and excretions! 2. 4 working modes with LED strobe light – there are 4 working modes for targeted deterrent of different rodents. Mode 1 emits 23.5kHz65kHz to repel mice, bats and squirrels. Mode 2 emits 9kHz23.5kHz to repel cockroaches, fleas and spiders. Mode 3 with flash light and mode 4 with flash and alarm sound, which enhances the deterrent effect. 3. Environmentally friendly and durable: our ultrasonic mouse repellent is nontoxic, odourless and radiation, which concerns your and the environment. Equipped with intelligent sensors, our mouse repellent detects rodents and activates automatically. Please make sure the ultrasonic rat repeller stays plugged in for at least 4 weeks to ensure that mice are kept away day and night. 4. Easy to use: the mouse repellent is incredibly easy to use. Simply plug it into a standard socket and it starts to work its magic immediately. The compact and unobtrusive design ensures that it won't get in the way of your daily activities, making it the perfect solution for any room. You will not even notice that the mouse repellent works as it works silently without disturbing your daily activities or sleep.