We have a 2-year-old Pyrenees mix (100lbs). She was adopted and untrained. I've spent 12 solid days with her - and it never worked...not once! It had no, zero, nada effect on her...while she continued to bark at everything. Completely ineffective. She doesn't even acknowledge it. This device is nothing more than a flashlight.
Might work on a domestic rat, but not a big dog!
Pros and Cons:
Bottom Line: No, I would not recommend this to a friend
5 people found it helpful
Link to this Review