There are many factors involved in training your dog, including your environment, your dogs genetics, and how committed you are to training your dog. You are the most important factor in your dog being Well-Behaved.
I cannot guarantee how you or your dog will react in any situation, so there can be no guarantee. However, I can guarantee if you follow the training protocol you will see a difference in your dogs behavior. I can also guarantee that we will train your dog without pain, fear, or force.