You know what, If it was $50 an hour and you could take along a hired meat head for protection, then I would say do it. They have topless maid services in a lot of large cities, it's not a secret. And yeah, of course the guy isnt in it just to have his house cleaned, they like to watch....just like porn. Doesn't mean it has to go any further than watching.
I wouldn't do it for $20 though. Actually I wouldn't do it period....not without fake boobs.