Answer:
I don't live within a house, nor do I live without. Most will use me when they come in, and again when they go out. What am I?
I canβt go left I canβt go right. I am forever stuck in a building over three stories high.
You bind me and I walk. You loosen me and I stop. What am I?
Mr. Red lives in the red house. Mr. Blue lives in the blue house. Mrs. Pink lives in the pink house. Who lives in the white house?
I have to be broken before I can be used
No matter how little or how much you use me, you change me every month.