The staircase in our new home is carpeted and is just a couple steps away from the front door. we do have a rug right inside the door but the staircase carpet has still gotten dirty really quickly, and we do not wear our shoes indoors. I think its just transferring under our slippers from the entryway. The dirt on the carpet is mainly on the edges/corners of each step. I wonder if a rug doctor will work for that? How do you clean your stairs?