1200 effective repelling range per unit. 10 Pcs U ltrasonic Pest Repellent. Repelling Ultrasonic Frequency: 22-65 KHz. ★Simply plug in and start to repel pests. Naturally drives pests such as ants, spider, centipedes, mice, flies, roaches, rodents, scorpions, silverfish, and rats out without killing them.
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