Do you guys have dogs on your routes? Two types on mine... the ones who are really scared and the ones that want to bite you. Here is what I do and it works great on both. Buy a box of milkbones and keep it in your truck. Every morning throw a couple in your pocket and when you get to the job give the dog one. After a few weeks the mean ones will love you and the scared ones wont be afraid anymore. It works great. And as a bonus 99% of the owners will think that you are a great guy because we all know how people love their dogs. Gives them another reason to keep you... Give it a try.