I use turtle upholstery foam cleaner, spray on a section, leave for a few minutes then wipe of with sponge and warm water, dry's in an hour. Then give it a hoover. And i wash and rince the car with a bucket of rain water from the water storage butts leaves no streaks and a soft Viking car brush and auto gylm wash wax. The dash and stuff get done with auto glym vinyl and rubber care. The only person who cares for my taxi is me, because nobody else does, they just want the money. Saw a taxi a couple of years ago in a car wash, the guy working on the power wash took a strip of taxi branding of passenger door, the driver didn't know at the time, I was passing at the time, I would consider it punishment for his laziness.:-)