4 Pack Plug In Ultrasonic Pest Repeller, Electronic Pest Control Repellents To Repels Away Insects, Mice, Roaches, Bugs, Flies, Fleas, Ants, Mosquitoes, Spiders. Human and Pet Friendly Features: 1.This pest repellent ultrasonic should be installed 30-50 inches away from the floor and should be vertical to the floor and plug in the outlet.2. The electronic pest repeller installing point should be avoid to be at the back of curtain, fridge or any other furniture that deterring or attaching frequency. 3. It is normal that mice and pests can be more active in the beginning of the use. It means that they don't like the ultrasonic wave and the repellent is generating therefore the pests are gradually disappearing from the place where the repellers are installed. 4. It takes 1-2 weeks for most customers to see the results. Others may take 3~4 weeks depends on the severity of pest infestation. Please keep the devices working. 5. To increase the effect, you should use several electronic pest repellents in several rooms. Specifications: Color: White Frequency Range: 22-50KHZ Power: 3W Power Source: AC90V-250V 50-60Hz Item Package Quantity: 4 Shipping Weight:9.5oz 100% Satisfaction Guaranty: We promise full refund within 30 days with any problem. Please contact us if you have any doubt about this product, and we'll respond as soon as possible within 24 hour.
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