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.
Break it and it is better, immediately set and harder to break again.
The eight of us move forth and back. To protect our king from the foes attack.
Whoever makes it, tells it not. Whoever takes it, knows it not. Whoever knows it, wants it not
I am free for the taking. Through all of your life, though given but once at birth. I am less than nothing in weight, but will fell the strongest of you if held.
What never gets any wetter no matter how hard it rains?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?