Pre-COVID state of cleanliness
I'm squarely in the PM is less dirty camp. Here's why:
The PM rooms are basically oversized tiled showers. They can be mopped, wiped, or even hosed out. There is a hand sanitizer fixture on the way in and each room has a baby wipe dispenser in it. Most of the girls I've been with wipe down the stool seat and backrest at a minimum. The rooms are lit well enough for you or the dancer to see. They are heavily trafficked and if there is something you don't like about the room you can refuse it! Seen girls refuse several times with the cleaning guy summoned. The bathroom is also a high traffic area and smells of urine.
The Bishop rooms are basically seven foot tall painted plywood open partitions. I think the floor is vinyl tile but I'm not sure (it used to be black carpet). Some girls also wipe the bench seating surface. It's nearly pitch black in there. Guess you can't complain about what you can't see. The bathroom is very good provided no one is smoking in there.
PM shows that some thought and money has been put into the operation. Bishops very little. Both have poor ceiling cleaning but Bishops is worse. Layers and layers of dust, especially behind the surveillance monitors and cords. Probably never been dusted.
Let's hope this COVID ordeal translates into cleaner clubs.