Need something to clean my sofa with

[MyGastIsFlabbered]

I've got a bright red sofa which is looking sadly grubby due to my 2 small boys! Can antone recommend something to clean it with. The upholstery isn't removable sadly.

Can you get hold of a vac or similar with a hose and head as opposed to an upright one? That's what I used to use to do the arms and back on my sofa as only the seat covers were removable.
I always found if it was grubby cleaning/scrubbing wasn't enough without something to sick the dirty water out again. Plus I imagine it would take an age to dry otherwise.