I LOVE this mop. My entire main level is hardwood. I knew upon purchasing that it wouldn't go over a ridge I have which divides two types of wood and it's not a problem for me. I like to change the washable pad anyway for the next section of floor. My largest area that it cleans first is big and I don't have to refill the reservoir which is impressive. I use about half the amount of their recommended cleaner and I have no streaks. I would say to start with a clean floor-I started with a floor that really needed mopped and I had to clean it a few times. Now I run the cleaner one a week and it maintains nicely. I also have a roomba vacuum that communicates with it which is awesome-first the roomba vacuums, then the Braava mops when it's done. When I get home I then move the mop to the other section of floor with a clean pad. It's a game changer for me-I like my floors clean. LOVE IT