4Pack Rechargeable Ultrasonic Bat

This rechargeable ultrasonic bat repellent effectively deters bats, birds, and mice, creating a pest-free space indoors, outdoors, or while camping. Designed with dual ultrasonic speakers, it uses 1-75KHz ultrasonic waves with 6 adjustable levels to target their behaviors. Built in a 950mAh rechargeable battery, provides 70-80 hours of runtime, covering up to 753 sq.ft. Safe and humane, it uses no chemicals, protecting kids and adults while avoiding harm to pests.