About this itemUltrasonic Repeller: Ultrasonic repeller devices emit a consistent high frequency noise that is too high for humans to hear. The sound waves are designed to disrupt, irritate, and deter common household like mice, roaches, spiders, and rodents.Energy-Efficient Design: It operates silently and without harsh lights, making it a cost-effective choice for long-term Mouse Repellent plug-in and overall pest control.safe and friendly: The ultrasonic mouse repellent is harmless and nontoxic to humans and pets. The rodent repellent is no chemicals, no poisons, odorless, noiseless, and no radiation, you don’t need to worried the ultrasonic repellent is harmful to babies or your pets.Build To Last: Our mouse repellers are made of high-quality mater.