2026 Upgraded 1/2/4pcs Ultrasonic Pest Repeller, 360° All-Round Protection, Silent Operation, For Babies & Pets, Enhanced Ultrasonic Chip Stimulation For Faster & Stronger Pest Control, Ultrasonic Smart Frequency Pest Repeller - Physical Pest Control, Silent, Suitable For Home, Kitchen, Office, Hotel, Warehouse And Other Indoor Areas, Effectively Repels Mosquitoes, Mice, Long-Term Use Yields Better Results.