Ultrasonic Pest Repeller uses the latest ultrasonic technology to repel flies, mosquitoes, mice, spiders, grills, fleas and ants. Say goodbye to chemicals and traps to create a warm living area for your family's pets. Features： - Removes bugs, ants, mice, cockroaches, mosquitoes, spiders, rats and more Non-toxic and environmentally friendly. Standard wall plug. Use only in the house. Power source: AC90-250V. Power: 5-6 W. Operating temperature: 32°F - 104°F. Effective coverage range: 800 - 1200 square feet. . 2-3 weeks: get the best results.