All great points, but a lot of that applies to this industry in general.
How often has an MPA’s hand gone from my cock dripping precum to the oil bottle, then back to my cock? Same goes for early stage BS with the panties still on, or opening the door handle at the end of the session to go the washroom to wash her hands still half covered in cum... ever wondered how often they clean those door handles or oil bottles? Not to mention girls that don’t wash themselves properly in between sessions (not all of course, but there are too many)…
If we start thinking too much about these things and who has been in the room just before you then this hobby becomes untenable unfortunately …
I do however always prefer early morning slots, partly because it’s quiet and girls are fresh, but also because I can have good confidence I’m the first customer of the day…