I did not want to believe the neighbor's cat, which should be vergrällt came snuck up, the device activated and the cat walked with his nose to a few millimeters to the ultrasound-emitting device zoom and sniffed it interesting. No trace of expulsion! After she had lost interest, she turned from bored and did their business as usual in my garden!
The device works perfectly - it just does not work !! Perhaps neighbor's cat's also deaf. However, I tested each adjustable frequency, not one of the three neighbor dogs (yes, still!) Has responded, even though the distance to the neighboring property was only 20 cm and the wall consists only of a picket fence.
I had the part sent back the most, but for too long experimented.
So: 1 point I admit, because my grandchildren can confirm the function, 4 points I take off because the unit does not do what I had bought it !!
Recommendation: Stay away !!
