I am very happy with the "Gentle Leader" got it off of Amazon. It truly is like some comments stated,"Its like power steering for dogs"
My dog Hank is a Pointer/Lab mix, we walk a minimum of three miles a day and he is a puller!! I got the Gentle leader to help and it sure does! He does not like the pressure it puts across his snout, He figured out real quickly it was him doing it and calmed right down.I used it every day for a month and he became a very disciplined walker. I went back to a standard collar and leash, when ever he starts to being naughty by pulling or excesive sniffing I go back to the gentle for a day or two and hes corrected! Works Great!(not Hank in the Picture)