About this item Long Term Use: Continuous use of the ultrasonic animal repellent for 14-21 days yields marked effects. Animal are organisms with individual differences, and their impacts vary. Please be patient and wait, then we can say goodbye to them. Efficient Solar Ultrasonic Animal Repellent: The animal repellent has 5 modes and uses the 2024 latest ultrasonic technology. It has a frequency range of 13.5kHz to 45.5kHz and is equipped with alarm sounds and LED flashing lights. 5 Working Modes Alarm Sounds: This dog repellent has 5 working modes and alarm sounds, which can prevent animals from developing immunity. The alarm sound can be adjusted in size, and you can set it according to the actual environment as needed. Waterproof Cat Repellent: The cat repellent is made of sturdy ABS and has a waterproof and UV resistant structure, which can withstand all adverse outdoor weather conditions. Suitable for outdoor places such as lawns, gardens, farms, courtyards, etc. Working Principle: The animal deterrent mainly detects animal movement within a range of 110 and 30 FT through PIR sensors, and uses ultrasound combined with sound and light systems to prevent stray animals from entering the protected area. Friendly to Humans & Pets: The raccoon repellent can drive away wild animals such as cat, dog, bat, rabbit, deer, skunk, squirrel, and raccoon. Suitable for outdoor places such as courtyards, farms, lawns, and attics, protecting your property. Worry Free Purchase: No need to worry about quality issues. If you have any dissatisfaction, please feel free to contact us and we will provide you with 100% satisfactory service.