Ultrasonic Pest Repeller, Electronic Pest Control for Cockroaches, Mice, Ants, Fleas,Safe Humans-US, Green

1.Ultrasonic TechnologyThis ultrasonic repellent can repel mice, bats, squirrels, spiders, cockroaches, wasps, ants, crickets, bed bugs, silkworms, mosquitoes, bees and other small pests. 2.Wide effective coverageThis rodent exterminator indoor ultrasonic is suitable for 30 square meters (no wall blocking), widely used in homes, warehouses, offices, hotels, etc. We recommend that you install one for each room, as ultrasonic waves cannot penetrate walls and solid objects. But for areas with sever