I don't use e-collars during training, but every now and then you run across a dog that doesn't respond well to standard training techniques. I rescue, foster, and own Belgian Malinois, which are very intelligent and persistent. When you get one that has a very strong pray drive, he or she will often be so focused on something that verbal commands go unnoticed. This collar offers a wide range of options that can be used before stimulation is necessary. I have found that both the sound and vibrator functions are quite effective at breaking the dog’s contrition, allowing them to refocus on the training. My only complaint is that I wish the manual would have been better written, as it tends to leave the owner on their own to figure out many things about its operation.