I purchased this product hoping it would help with the bad behavior of my dogs (barking, jumping up on people and aggression with each other). I followed the instructions that came with it and my dogs looked at me like I was nuts. I kept trying it for several weeks and it did not help one bit. Now I am either not doing something right or this product is a waste of money. I was seriously hoping that this product would help as I am very disappointed.
Bottom Line: No, I would not recommend this to a friend