I'm pretty much the same as Joe with customers asking me, "could you just clean these 5 rugs whilst you're here" ?
I get 3 Scenario's
1. It cost a fortune.... it obviously did and dare I touch it ?
2. It cost a fortune.....they were robbed !
3. It was only cheap.....and it certainly looks like it was!
It's the two extremes that concern me most. Some are obviously left to the specialists and that's what I'll sugest.
The really cheap one's can be so thin that if you so much as show them a sprayer they curl up like yesterdays old sandwich

I prefer where possible to clean them on site and in fairness most customers are happy with the results.
I sometimes take them away but like Joe, don't live in the village hall so it generally means a clean outside, ( obviously I tell the customer the rug will be cleaned in our spacious air conditioned facility using only the purest natural waters....that covers the fact it rained half way through cleaning) :

Les