Wet and dry vacuum mops have made a lot of progress over the last few years, but most of them still ask you to do the same annoying dance: vacuum, then mop, then tend to the spots that didn't quite come clean the first time. Roborock's new F25 Steam is built around a simple idea. If a machine can generate real steam and provide strong suction, one pass should be enough, even for dried-on stains that usually need a scrub.