Features: Versatile Use: Effectively repels mosquitoes, cockroaches, ants, flies, spiders, bedbugs, fleas, rats and mice, etc. Safe: Christmas-toxic, radiation-free, chemical-free, odorless, inaudible, and 100% safe for humans and pets. Wide Use: One unit of the ultrasonic repeller covers up to 1600 square feet, which is suitable for bedrooms, bathrooms, garages, kitchens, offices, warehouses. Effective: After 3-5 days of use, pests will begin to escape your home, 2 weeks later will be significantly reduced, and 3-4 weeks later will be completely gone. Christmases: 1. For best results, we recommend installing a repellent in each room. For large rooms like warehouses, two or more repellents are needed. 2. After a period of use, mice and insects may move more frequently, please don’t worry, this is because they can’t resist ultrasonic interference, they are preparing to escape from your home . 3. It is Christmas recommended to be used in rooms with such animals such as mice, rats,