I work in a clean room.
I put on booties.
I wear a gown, a hairnet, and a face mask. These are all white.
I pull on rubber gloves.
I button my sleeves.
This is preparation.
There are two doors into the clean room.
One door is the human entrance.
The other is the human exit and the equipment door.
I open the human entrance door and step inside.
It is a tiny room with nozzles on the walls and ceiling.
They blow dust off of me.
I can only enter the clean room if I am clean.
If I repent.
I open the next door and enter the clean room.
Large equipment doesn't fit in the tiny room.
It must be carefully wiped down with alcohol,
and pushed through the human exit.
It takes no preparation or cleaning to exit.
Just walk out.
Inside the clean room people dress the same.
Everything is clean.