Unlike other insect repellents,this product needs to be used continuously for more than two weeks to effectively keep your life peaceful. This product will not cause harm to cats and dogs, but cats and dogs will be very curious about it and even hostile. In rare cases, dogs bark at our products. If dogs bark, please don't be nervous. It takes a certain time to adapt. Small, humane, and easy to use. It is AC powered so there is no need to worry about changing batteries.Keep rats and pests out of the door and chipmunks and squirrels out of the backyard FIG tree. 4 Modes,Test/Ultra/Trans/Duo,Effectively scan an area measuring 5,000-6,000 sq.ft,suitable for garage/restaurant/office building and other indoor scenarios. Great Alternative to Chemicals! After field test, Frequency Range: 25khZ-65khz, Acoustic Pressure:90dB, can be friendly with cats and dogs, not affected. If there are more than two mice in the house, it is recommended to turn on the DUO mode directly, the effect will be more direct, it will quickly interfere with the hearing of the mice, and at the same time make them fall into chaos, so as to achieve the purpose of driving out of the house.