We usually use a combination of cleaning technics including steam cleaning and specialized chemical depending on the kind of stain and material.
We also have a specialized vaccum machine that injects chemical in the cushion and then sucks it back therefore minimising mist and cleaning / killing accarien deep in the sofa.
The end result depends of course on the kind of stain and the type of material (leather, vinyl...)
For a 3 seater sofa the cost of cleaning can be from 1500B to 4500B depending on material and stain.
It is a good idea to send us a picture so that we can more precisely quote you.
Undernath a few projects completed sucessfully
Upholstery, sofa, setee, , armchairs, couches cleaning 
Leather Sofa cleaning
Fabric sofa cleaning (about 2500B)
Vinyl Sofa cleaning in a yacht
Fabric sofa cleaning (about 2000B)
