How to Use An Ultrasonic Rodent Pest Repelelr Correctly?

How to Use An Ultrasonic Rodent Pest Repelelr Correctly? Hifi-Change Ultrasonic Rodent Pest Repeller Usage and Coverage: 1. The unit mainly impacts on mice, rats and other rodent species. Do not keep rodent pets (such as gerbils, hamsters or guinea pigs) in ultrasounds protected area. 2. This unit can be used in the following places: Homes and apartments, food services outlets, businesses, museums, libraries, banks, wine-cellars, farm buildings, boats and RV`s, institutions, etc. 3. The effective coverage is around 150 square meters which is enough for a room. The effectiveness will be better if more units used or other pest control methods combined with it in the room. Tips see below: