ULTRASONIC TECHNOLOGYThis ultrasonic insect repeller is the latest version,The product can repel mice, bats, squirrels, spiders, cockroaches, wasps, ants, crickets, bedbugs, silkworms, mosquitoes, bees and other small pests.^COMPACT AND CONVENIENTThe compact size makes it possible to work without shielding the three hole socket below, so that you no longer feel trouble.^WIDE COVERAGEThis product is suitable for 800-1200 square feet of indoor area, and is widely used in families, warehouses, offices, gardens, hotels, etc. We recommend that you install one for each room, because ultrasound cannot penetrate the wall. If equipment is installed in one room, they have no effect on other rooms. For sites with serious pests, we recommend to install 2 or more devices.^MORE COMFORTABLE FOR CHILDREN & PETSDo not use harmful poisons, dangerous chemicals and traps. Our products are 100% environmentally effective. Replace harmful and dangerous chemicals, poisons and traps with ultrasound that can't be heard by humans and pets, without peculiar smell.And our repellents approved with the EPA EST.NO.97444-CHN-1.^No need to worry about your familys safety : Our product is designed to affect only insects and pests. Unlike contraptions and poisons, its safe to use around dogs, cats, newborns, children and pregnant women. It works silently in the background and youll hardly notice it.^