Safety : The Rodent Repellent does not use any chemicals or poisons but just high-frequency sound waves which do not harm people or pets like cats and dogs as it does not involve the use of chemicals.4 Kinds of Operating Modes : Mouse repellent can free to set a repelling mode based on your needs. TEST = test tone (Simulates the sounds that rodents hear, check the ultrasonic sound works or not). ULTRA = ultrasonic sound (Repels mice effectively). TRANS = pressure waves (Repels rats & squirrels effectively). DUO = pressure waves + ultrasonic sound(Repels all rodents that mentioned above).Easy Application : Plugging this device and it will start doing its work to protect an area measuring 5,000-6,000 Sq.ft effectively, protect your RV, garage, rooms, attic, basement, warehouse, barn, kitchen, office, anywhere indoors Powerful & Advanced Design: Squirrel repellent is equipped with a transducer and dual speakers, which can emit high impact pressure wave and 25KHz-65KHz changing ultrasonic sounds to disturbe the central nervous systems of pest in your house. Creating an unfriendly living environment for rodents to discourage them from entering the protected area again in a long term. Humane & Eco-friendly: Unlike other repellent devices, this pe st repeller is a humane way to drive pest away About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied..Items from Sheng Xinshun's shop