Have been getting more calls of late to clean mattresses and did one today, but as yet have never been that successful in getting the stains out!
I never guarantee that they will , however that is mainly the reason people want them cleaned, in fact most of the ones i've done look slightly worse :

Does anyone do this with good results, or is it impossible to get the really bad stains out?
Did a mattress today, the lady had paid over £800 for it and I could tell she was a bit dissapointed at the results, but paid up anyhow, would liked to have done a better job, but to be honest it was in a right state

Normally use prespray gold and extraction pro, using the t/m and internal jet hand tool.
Any feedback would be great.
cheers
steve