I asked for a move out clean of my house. It was empty, except for a single piece of furniture and some bags in one room. The good: the place is clean. I had to point out that the laundry room should definitely be mopped and the utility sinks scrubbed out, but the house and refrigerator are very clean. Also, I was charged the agreed-on price.
The bad: I have a small cape cod. Including basement, it is less than 1900 sq feet. I have cleaned the entire house myself, top to bottom in 4 hours (not including fridge). It took 2 people over five hours to clean the space. I was told that there was a lot of dust, but the cleaners were using a bristle broom, rather than microfiber, which makes it harder to clean wood floors efficiently. There were a few things like that, which I believe contributed to the length of time it took. Basically, if time is not of the essence, and you want a good clean, Mrs Green Clean Maids will do a good job.