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.
What can run but canβt walk?
What is neither inside the house nor outside the house but a necessity for any home?
My teeth are sharp, my back is straight, to cut things up it is my fate.
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty.
You kick me, you punch me, and you beat me up all class. When you leave, you don't even say thanks for allowing you to beat me up. What am I?