It's probably the best advice you'll get.
last year some one called me with a wool rug he left on the washing line after he had cleaned it and it rained on it. He then put it in the garage to dry out. When he found out that the rug smelled he called me to try and cure the problem.
I told him it would be a £50 minimum call out charge and that in all probability, the smell could not be removed as the rug is ruined.
So this guy tells me he would not pay £50 and he would get a Rug Doctor and clean it himself....which I told him would do no good
The moral of the story is that someone has a rug that is probably not worth a lot and it's pretty well trashed in the first place.
And as many may do, they will run around in circles trying to cure a problem that is not worth pursuing either time or profit wise.
I'd rather be chasing jobs for 2 or 3 hundred quid rather than dealing with someones sha**ed rug