Shaun
I have been asked this question on several occasions but I have deliberately avoided taking it up.
My reasons are that to suggest to some people that steam can be used successfully will tempt them to go out and buy a steam generator and blast away...
doesn't work...
tried it!
When I first had my unit I merrily put stains onto carpet/fabric samples left them for a few days to set and then hit 'em big time.... had a lot of ruined samples and suddenly thought that I had wasted my money foolishly.
It took time to develop techniques and steam certainly can be a benefit to the carpet/upholstery cleaner.
It defrosts the freezer pretty quickly too
I now use it to clean curtains, certain stain removal jobs, relaxing carpet creases following fitting of new carpet.... just some of the things...Oh! and defrost the freezer
As a one-time instructor I have to carry insurance so that in the event that someone fouls up after following my advice... I am insured. This could also apply to carpet cleaners in general...after all we all give advice, over the bulletin boards, to customers etc.
Cheers
Derek