Bests & Worsts Reviews from Amazon

I have had other units that cost twice as much that didn't do anything. I ordered this one and when it arrived and I took it out of the box I thought it looked more like a toy bird house. The unit is very well built I will say. I installed the battery and waited for the neighbor dog to start barking. That took about 15 minutes. I set it behind the fence with the sonic speaker pointing though the space in the pickets. The dog stopped baking after 3 barks and took off to the far side of their yard and stayed there. Next morning it started again. I turn the unit back on and after one bark the dog stopped for the hole day. For the last 2 days there has been no barking at all and the unit is turned off. Seems like they understand now not to bark. My neighbor must think there is something wrong with their 2 dogs. Of course, they never tell the dogs to shut up, they just let them bark. No sure I understand. I couldn't believe that it worked that good. Thanks DogTek. Job well done.