I think this is a real concern. I have talked to most of my friends about their cleaning people whether it's an individual or a team and they all say, prepare yourself to have your furniture, legs, dented, and a few have had things stolen. Of course I think there are a few that have had people long-term and are happy with them even though everything's not perfect. But even when I clean, everything is not perfect! When I interviewed Cleaners one woman who was an individual, who, for various reasons, I could not hire because she couldn't work the days I wanted, did give me a word of advice. She said to avoid "teams" that they often are the most likely to steal. Several of them, sort of scope things out and act as a diversion while one of them will take stuff. I don't know. Personally, I hate having strangers in my house.