for anyone who has recently takin it. what kinds of questions will be on there, i heard almost nothing about bikes is on there its mostly about fines and offenses
the same way you would clean chairs and couches.use a carpet cleaner that has nozzels on it and a long hose and clean it the same way. after you clean it then spray it with a protective coating that will guard against further stains.
I'm pretty sure if it cover it, your fine