Ｍ－１ Ultrasonic Pest Repeller 4 Pack Electronic Repeller Indoor Plug-in - Get rid of - Rodents, Mice, Rats, Squirrels, Bats, Insects, Bed Bugs, Ants, Fleas, Mosquitos, Fly, Spiders, Roaches!

[2021 Latest Dual Chip Technology]: This ultrasonic pest repeller uses the latest dual-chip, emits a more powerful and concentrated ultrasonic wave which makes pests and rodents more difficult to immunize than before. This range of ultrasonic frequencies can irritate and interfere with the brain and auditory nervous systems to quickly and powerfully drive away from most types of pests like mice, mouses, ants, mosquitoes, spiders, cockroaches, etc. [Harmless & Less Power]: Less power consumption, inaudible and harmless to human and pets, no need to clean up dead pests, no more need to call pest control technician for help, no battery required and save a lot of money. " [Large Coverage Area]: Ultrasonic Pest Repeller is effective in an indoor area up to 8,00 sq. ft. They are widely used in homes, offices, warehouses, gardens, hotels, etc. We recommend you to install one for each room as the ultrasound cannot penetrate walls or solid objects. Please make sure there are no barriers li