How do I clean a nursing chair?

[ironlikealion]

It is filthy, tried scrubbing with laundry detergent and then mopping with kitchen paper but it does not look any cleaner.

Why oh why does it have fixed covers?

Do I have to hire a steamer or will more elbow grease do the trick?

What is the material/fabric that it is covered with?
Have you tried a tin of car upholstery spray cleaner? They are quite good. It is a thick foam that you leave on for a while and wipe off.
Bicarb dusted on then hoovered off gets rid of smells.

Thick cottony stuff I think. Will give the car cleaner a go, thanks!