ASIN:B088BS2RNR [Easy to Use]: Mini size, just plug it in any outlet. Be sure to install bug repellent vertically about 30-50cm from the ground and make sure there are no obstacles in front of the insect repellent. Then we can say goodbye to the pests! [Effective for All Pests]:The ultrasonic pest repeller uses the latest smart chips and can emit continuously changing ultrasonic wave in the range of 22kHz to 65kHz, which can drive away all kinds of pests, including rodents, mice, rats, squirrels, bugs, cockroaches, mosquitoes, ants, flies, spiders and other insects. Just expel pests from your home, not kill them. [Very Safe for Humans and Pets]:Our ultrasonic insect repellent is made of ABS flame retardant material, durable and environmentally friendly. It contains no chemicals and no odour. The ultrasound emitted by the pest repeller is inaudible to humans and family pets. Very safe for children and pets. [Wide Effective Coverage]:The effective range of our rodent repellent is upto 600-1100 square feet. It’s widely used in bedrooms, kitchens, halls, warehouses, offices, gardens, hotels, etc. We recommend that you install an insect repeller for each room because the ultrasound cannot penetrate walls and solids. But for areas with serious pests, it is recommended that you install 2 or more devices in your room. [Noiseless]: The ultrasonic waves that this repeller sends are far beyond the hearing range of human-beings. Enjoy a peaceful & pest-free tight sleep without any concerns for noise, keep your family have a good sleep form the noise