We were told at Petsmart that device is not as effective, so we went with the outdoor treehouse one.
We picked it up yesterday. I have 2 dogs, Teddy and Laila. This unit seems to scare Laila like no other. She barked and ran out the door and into the garage! I have never seen her so scared. She hasnt made a sound since. We have tried to ring the doorbell, which in the past makes them go nuts. Not a sound so far.
So far it works, I just feel bad, she is so scared. Teddy seems to be pretty smart. He doesnt even flintch if the unit goes off, and still doesnt make a sound.