Answer:
I always have to work with something in my eye.
I can go through glass without breaking it.
I go from house to house a messenger small and tight. Whether it rains or snows I sleep outside at night.
What goes through towns and over hills but never moves?
I may be made of metal bone or wood and have many teeth. My bite hurts no one and the ladies love me.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?