So for a year now, it has been mopping the tiled floors in the kitchen, entrance and bathrooms at least once a week, and the parquet floors in the rest of the flat a little less often. The mop has been in the cupboard unused ever since.

But we usually let it do 3 passes, because dried stains are only "moistened" in the first pass, but only really go away in pass 2 or 3.

Of course, there are always stains that don't go away even then. But for those, even if you use a mop, you would put it aside and work on them quickly with a cloth.