1.Repels by emitting an intermittent combination of sound and vibration. The sound waves will irritate them, simulate danger, and repel them away from the irradiated area.

2. Applicable to outdoor gardens, nurseries, lawn and other surface and underground flooding rat.

3.Battery slot included,you can easily change the batterier without pull out the whole product.

4.Emitting the sound wave each 30 seconds and lasted for 3 seconds.