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.
When the day after tomorrow is yesterday. Today will be as far from Wednesday. As today was from Wednesday. When the day before yesterday was tomorrow. What is the day after this day?
Double my number, I'm less than a score. Half of my number is less than four. Add one to my double when bakers are near. Days of the week are still greater, I fear.
My second is performed by my first, and it is thought a thief by the marks of my whole might be caught.
A hole in a pole, though I fill a hole in white. I'm used more by the day, and less by the night.
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.