Package Includes:2x pest repellent Product Specifications: Material: ABS Weight: 7.52ounces (2pack) Size: 3.4inx3.4inx5in input voltage:90~240V 1. Normally, during the initial period of use, as they will leave the habitation after being attacked by the ultrasonic waves! Ultrasonic pest repellents do not work immediately like chemicals and it may take 23 weeks to see a large degree of effect. 2. It is normal to see a slight increase in the number of pests after installation as they will be flushed out of the walls and their shelters. 3. 150 square metres is the maximum effective range of this ultrasonic pest repeller for indoor areas. It is recommended to have one repeller per room to get good results as ultrasonic waves do not penetrate walls and solid objects.
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