Sometimes the active dog just will not listen, especially if the Tarc bus is letting people off right by our house. I am able to use the vibrate feature to get his attention deterred from what he is barking at to respond to me.
I never tried the shock feature as I don't think my dog needs this feature used, the only thing that I would change is possibly marking this button red, so you don't accidentally hit the button when using the remote. You can do this with a permanent marker like I did.
I have been very happy with this collar, it quickly gets my dogs attention when he is in a barking fit with total attention on what he is barking at. I received this set at a discounted price or free in exchange for an honest review.