We probably use it on average once a day. We use it on small spots (even urine) and some large spots, but use the big boys (ninja/u-mate) on the larger urine spots and furniture. Great item to have in your arsenal for red dye removals, paint spots, etc. Definitely saves the back, especially if you’re running one man crews. I would not recommend using it on stairs as a primary cleaning method. Agree with others that it just doesn’t have the suction/output power needed. Also, with the size of the head on the unit (approx. 4-5 inches wide), it probably wouldn’t save you a whole lot of time in the long run, especially if you are cleaning large staircases.