Safe for humans and pets. Just plug in the rat repeller and it will go to work. 【Rodent Repellent 】Adopting the latest frequency conversion output technology, this mouse repellent emits different frequencies of ultrasonic wave and LED flashing lights to irritate nervous system of insects and rats,to disturb their activity in the dark,making them feel uncomfortable and flee away gradually,but does not bother pets.Get a pest-free space within a month.
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