Answer:
People are hired to get rid of me. I'm often hiding under your bed. In time I'll always return you see. Bite me and you're surely dead.
This only turns over once you have traveled very far. What is it?
What surrounds the world, yet dwells within a thimble?
What is red and nailed to a wall?
When I get closer my tail grows longer, but when I go away my tail leads the way.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?