A couple of days after using the Braava, my tile floor becomes gritty. I'm not sure if this is because of the cleaning solution or not. Makes the floors slippery because of the grit. The day that the floors are cleaned and the day after they're great. You cannot let this run while you're not there to monitor it. It's smaller in height and becomes easily stuck under some of my cabinets. It also doesn't clean to a shine. Leaves the tile looking murky.