This is another great produce from iRobot. I am amazed at how well it cleans. Though it only uses water, it leaves my laminate wood floors clean and shiny. I have mahogany laminate which is a dark wood, meaning that dust shows like nothing else. We live on a farm and raise animals. There is always lots of dirt and dust brought in on our shoes, by our dogs, or simply from the dust from the country dirt road that permeates everywhere. The Braava works slow and serious. It takes care of the daily grime. When things get very bad, like after rain when there is lots of mud, I would still use a mop, however, for the daily marring from farm shoes, it is wonderful! Note: it works great to run the IRobot first to pick up all the loose dirt. Between the two of them, I have so much more free time to get my own work done and my floors look great!