Tim only offers positive training methods, ones that don't have a negative effect on your dog's state of mind. And ones that will set in place good habits of a lifetime as opposed to those that work because of the 'shock factor' that don't last once the dog's back home etc. Punitive methods are also likely to reinforce unwanted behavior and can cause a dog to become fearful. You can trust Tim's methods 100% I wouldn't go to anyone else with my dogs.