Advanced Ultrasonic Technology The ultrasonic insect repellent features advanced ultrasonic physical technology and an efficient heat dissipation system. It works by emitting ultrasonic waves that are designed to disorient pests, targeting their auditory and nervous systems, and effectively repelling rodents and other unwanted insects. Effective for All Pests This electronic ultrasonic pest repellent plugs into any standard outlet and helps repel mice, mosquitoes, spiders, ants, flies, cockroaches, fleas, and other common pests from your home. It aids in maintaining a clean and comfortable living environment. When first using the device, you may notice increased pest activity, which is normal as pests react to the sound waves. This should subside as they leave the area. Safe & No Harm to Humans The ultrasonic rodent and insect repellent is safe for humans and pets. It contains no chemicals, poisons, odors, or radiation and operates silently. It is safe to use around children and pets. The device uses non-lethal ultrasonic sound waves to deter pests without causing harm. Wide Effective Coverage The upgraded ultrasonic repellent features a dual microchip system and is effective in indoor areas up to 1600 sq ft. It provides consistent coverage for medium to large rooms, making it ideal for homes, offices, and apartments.