This ultrasonic pest control device uses a dynamic frequency range of 19-65 KHz to effectively repel mosquitoes, cockroaches, and rats without harmful chemicals or traps. The system offers three targeted modes: mosquito mode simulates natural predator sounds to trigger avoidance instincts, cockroach mode disrupts foraging and breeding behaviors, and rat mode interferes with communication and living habits. Each unit covers up to 2,152 square feet, and the two-pack design provides comprehensive protection for your entire home. The ultrasonic sound operates at frequencies only audible to pests, making it safe and humane for families and pets. Simply plug the device into any standard outlet and select your desired mode using the digital display. Ideal for use in kitchens, bedrooms, living rooms, offices, garages, basements, and warehouses. This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.