We love PetGentle! When we first tried it nothing happened so I checked the batteries and they had a protective wrap on them. Took the wrap off and it works great. Point it at their face, press the button and they run into the next room. Make sure the red lights are flashing so you know it is working. Change the batteries if necessary. Now we just pick it up when they are barking and they run into the other room. We're thinking about getting two more for other rooms.
Bottom Line: Yes, I would recommend this to a friend