Landlords ring me up and say "you've been recommended, as I had a cowboy last year to clean my filthy, stained, smelly student house that I let and they didn't make any difference".
I say well I can solve most if not all of the problems but it will cost approx £XYZ, then they say either "I'll call you back" or "I didn't think it was going to be that much" bearing in mind that the cowboy has WASTED their money last year for say £60, I can resurrect the carpets for may be £200ish, "cheaper to get new ones" is one reply but my reply is "why don't you!"
Shaun