I used them with my Perla, my first doggie since Miky was adopted later. they never worked with her. What always works better for her was and is positive reinforcement and my warmth and calm voice. She’s stubborn as any westie and has her personality but she responds pretty well to my positive reinforcement.

I used César Millán’s techniques to help Miky overcome his fears: motorbikes noises, bangs.
For example, I used to approach him to where the noise came. Kind of desensitization. All in a calm way. As saying to him, nothing happens. That’s normal. He overcame his fears but now I don’t know if I was abusive with him.